When a string compsoser or arranger wishes to create a specifically warm or hazy sound, they may well write in the direction ‘Sul Tasto’ meaning ‘on the touch or on the fingerboard’. In effect this means bringing the bow further away from the bridge until it is over the end of the finger board. Here, the string has less tension as it is further from the point of suspension on the bridge and therefore has less resistance, so cannot take as much pressure. Generally Sul Tasto is used for a softer dynamic (such as p or pp) and like a harmonic, a faster, gentler bow is utilised.
Yehudi Menuhin defines it as giving “….a velvety and cooing sound. The string is soft, not as resistant, and cannot take any pressure….”
When a full string section players Sul Tasto, the effect can be of a very soft sheen with any surface noise absorbed by having so many players. In a solo instrument, recording with a close microphone can pick up some of the surface noise (the bow against the string), but it has a lilting, ethereal quality, not unlike a flute.
All musical tones are based on the harmonic series - whether it be a length of brass pipe, a church bell or a taut length of string, all instruments are subject to harmonics. The harmonic series are a sequence of pitches relating to a lower pitch (or fundamental note,as it is often called). Therefore a sound of a certain number of vibrations will also cause overtones to resonate in a ratio to that sound eg. a 100 Hz sound will be accompanied by overtones of 200, 300 and 400 Hz,and so on. All musical sounds possess all the notes of the harmonic series and it is the way these notes are blended together that gives sounds their individual ‘timbre’ or texture. Therefore the blend of the harmonic series in an oboe is different from that on a violin.
The harmonic series has been at the heart of tuning and temperament for thousands of years, before the standardisation of pitch into what we call ‘equal temperament’. This tuning system which has only gained universal currency in the last hundred years is the least understood of all musical concepts as it has been so wholly embraced. In so doing, not only has it ironed out music into 12 strictly equal semitones (robbing it of much of it’s harmonic character) but it also goes against the natural laws of the harmonic series. This is why even the world’s finest orchestras can have irreconcilable tuning issues.
For a full explanation of this all-encompassing musical dilemma I would like to heartily recommend Ross W. Duffin’s ‘How Equal Temperament Ruined Harmony (and Why You Should Care). An organist friend of mine passionate about various tuning systems brought it to my attention it and it is scholarly, concise and a hugely entertaining read.
On all stringed istruments the harmonic series reveals itself as described above. Therefore when a string is foreshortened (or ’stopped’) by a finger the same ratios apply eg. there is a harmonic exactly half way up each string (ratio 2:1) sounding an octave above the open string. The second one is a fifth higher than that (ratio 3:2) and so on. These notes are called harmonics and can be played by touching the left hand finger very gently on the string with a fast and light bow speed (in a similar way to making a wine glass produce a pitch by running one’s finger along the rim of the glass). The note thus produced is pure, clear with a flute-like quality different from any non-harmonic notes.
Stringed instruments are also capable of producing ‘artificial’ harmonics. These mimic the tonal qualities of a harmonic but produce notes of a higher pitch than the natural note in the same way. The lower finger ’stops’ a note in the conventional way with a higher finger gently touching the string at the interval of a fourth above to produce a note two octaves higher than the lower finger. In this manner, it is possible to play whole melodies transforming the sound of the instrument into a completely different timbre.
In the context of a string arrangement, harmonics can produce an ‘other worldly’, ‘eerie’ quality that can add a real sense of mystery and magic to a piece, even when mixed in with other instruments in a track, the effect is haunting!
Counterpoint is the art of writing individual parts that have complete melodic independence from one another yet work in harmony and compliment each other perfectly. It is a skill that comes from an advanced understanding of harmony and an innate grasp of what will sound correct. If done with imagination and flair, counterpoint can completely transform any piece of music into something rich and complex.
Fortunately, there is no computer (as yet!) that can automatically write counterpoint - it is an art that comes from a human beings inspiration.
There have been many sessions that we have been asked to provide strings on where the string parts have been sustained in nature and harmonically slightly empty (often travelling in octaves or unison with little texture in the middle). This can be appropriate where the other instruments are busy in the track but often it’s inappropriate and doesn’t fully utilise the presence of live strings in the studio. In this context, counterpoint in the form of a skillful counter melody or an interesting, moving part can provide a special feeling adding climax and interest to the string parts. When a composer is completely reliant on a keyboard and therefore bases much of the writing on blocks of chords, then the strings never really come alive. It is the presence of the individual strands which make up a beautiful, flowing whole - rather like a tapestry with different threads and colours woven through it.
If a string arranger is considering writing a counter melody (whether above the tune or in the middle register to add detail underneath), they can start by playing around with the three notes of the triad in the existing chords (in the instance of a 7th chord, this may be 4 notes). Before long, a melody will start to unfold based on these notes and eventually the shape of the melody will emerge, often through passing notes which allow it to effortlessly travel from one chord to another in a smooth succession.
Here’s an example of a string arrangement I wrote for string quartet - based on the traditional Christmas tune ‘I Saw Three Ships’. Although many carol books suggested which chords to put with it, I was happier experimenting until it felt right.
Violins: Vaughan Jones and Louise Bevan, Viola: Adrian Smith, Cello: Tony Woollard
As an example of a counter melody, at around 16 seconds in, the second violin begins a counter melody to the same rhythm as the first violin. At 29 seconds in, the viola and cello have the same motif, an octave lower whilst the upper strings have a pizzicato figure to add rhythm and life. All the lines sound pleasing when played individually. The rhythm and tune is moved around between different instruments to add interest whilst the pizzicato bridge section builds up in thickness as well as volume to add climax. At 1 minute, a new counter melody is introduced like another layer being added in the second violin, whilst violin 1 and cello are in octaves. At 1 minute 20, the tune from the second violin breaks into the first violin part to dominate the piece with the main theme becoming secondary but still discernible. At around 1 minute 40 seconds, a totally new melody emerges that now replaces the main melody all together, yet is it is still in the same style and fits the chords harmoniously. At 1 minute 56, a canon in four parts is begun where part of the theme is treated fugally, passing from one instrument to another but always overlapping and building up a busy counterpoint which ends with the cello repeating a two bar phrase. The distinctive rhythm is kept going from 2 minute 15 onwards in the cello part whilst the second violin gets the melody and the first violin has an intricate and showy folk type accompaniment - this builds up to a climax before the two violins have an identical one bar phrase in sequence and the whole piece ends with the rhythm played by the viola in an echo of the opening of the piece.
Generally writing or arranging for strings does not always have to be this busy or intricate (unless they are required to be a real focal point!) but when strings are required to stand up in their own right (without additional instruments in a track), they need to really come alive!
In earlier blog entries, I wrote about how different bowing techniques can affect the sound of a violin or string section and how it can also help to create different moods or feelings within a string arrangement. Previously, I covered Martele, Spiccato and Marcato bowings and today I wanted to write something about Sautille bowing.
Sautille bowing is a form of spiccato which allows the natural bounce of the bow to create it’s own momentum and seems to allow the bow to bounce of it’s own accord. When the spiccato bowing is propelled at a fast speed, the amount of bow used becomes less and the area of the bow which touches the strings becomes further up (higher towards the tip of the bow). When this happens, the bow begins to spring with very little effort from the player.
In a string arrangement, this could be used for highly virtuosic passages where either a single note is repeated or the passage work is quick and furious. To write this in, an arranger would notate this the same as most other detached bow strokes with a dot at the top of the note head, but what would suggest to the player Sautille would be the rapid speed of the notes.
Sautille can be played at any dynamic or accented or double stopped to give real energy and flair to a string part.
The word ‘Glissando’ comes from a French verb ‘to slide’ and applies to any passage where one note slides rapidly up or down to another. On the piano this is done by drawing the finger quickly up or down the keys and the technique is often used in music written for harp, trombone or any of the string family.
On a stringed instrument, this glissando effect can be achieved by simply sliding from one note to another on the same finger on the same string - it can be used to give a slightly ‘folky’ feel (swooping up to a note as in bluegrass or Celtic fiddle music) or could be used more slowly to add tension or suspense to an arrangement. A common use of glissando is in horror films or psychological dramas when anticipation of something sinister is being built up. One well known pop song which utilised glissando effectively in the strings was ‘Day in the Life’ by the Beatles and it features quite widely in quite a few tracks by ELO.
Although Portamento seems quite similar to glissando in the fact that it’s a gliding from one note to another, it is different in the fact that it doesn’t tend to connect the two notes with the slide but is more of a gentle sliding at one end of the interval or the other. For example, a violinist could go from say, a D to the same note an octave higher, with the portamento providing a shorter slide at the beginning of the interval, before landing accurately on the higher D - or it could leave the first note, then land a little bit early and swoop up to the upper D. This gives an expressive slide but without the two notes being completely connected. In its’ best use, writing in portamento can add real character and feeling to a phrase, making it full of character and adding interest / life to the strings.
Including both glissando and portamento in a string arrangement can work well for solo instrumentation or a full string section, adding either one skilfully can liven up strings and add excitement or expression.
A tremelo can be defined as being a ‘trembling’ or ‘quivering’ effect - this usually takes one of two forms. One is where a single note is rapidly bowed repeatedly and the other is a a fast oscillation between two notes (rather like a trill) - with the gap between the two notes being wider than a trill.
A tremelo might be rhythmically even, or unmeasured (which can also be written as tremolando). The unmeasured version would be used where a composer or arranger instructs the notes to be simply played as quickly as possible - this technique is used often when adding strings to pop and rock tracks and can add a feeling of tension to a piece of music. Tremeloes can also be given an accent at the beginning (which means the first note of the tremelo is emphasised to give it a ‘kick’) - this can convey a feeling of tension even further and is particularly effective with a full string section rather than writing for single strings.
In string arranging, a tremolando can also be used very quietly - and if the whole of the string section are playing this way at the same time, it can give a rumbling feeling of something imminently about to happen - so instead of having a chord held, it can lend a sense of anticipation and of course add all important variety to a string arrangement.
Many of the jobs that we’ve worked on have been for clients who have sent us string parts they’ve written themselves from a midi file. Scoring from midi requires no knowledge of music theory or written notation and often involves the composer playing parts into a keyboard and then printing off the results.
Whilst this is a useful tool in many situations, it rarely produces results that sound convincing for string players once we’re in the studio. Here’s an example: If the composer has little knowledge of the different musical clefs then a cello part can be printed off in a treble clef. As the range of the cello extends lower than the treble clef can accommodate, we’ve been handed parts with about 10 ledger lines at the bottom of the stave, the notes overlapping the stave below - almost impossible to read. The other problem with playing chords in via a keyboard is that it ends up quite ‘fixed’ with no ‘feel’ and the inner parts don’t have a satisfying musical line - therefore so much of the potential from using live strings is lost.
Writing for any collection of instruments is all about the individual line of each instrument. If the parts are moving in chords, each part sounds best when it is playing a melody that harmonises with the rest of the parts in the piece or track.
Very often, expensive studio time can be wasted whilst session musicians sit around re-writing scored midi parts until they are both readable and playable, so as a matter of course we now do ask clients to send through midi-created parts so that we can tidy them up before the session, and save everyone time and money. We charge a nominal fee of £40 per hour for this - the same fee as for string arranging from the original track in the first place.
Although it might seem cheaper to create parts using a midi, it can be just as quick and economical to hire a string arranger to score the parts properly for strings in the first place - and results will be more effective with creative harmonies and melodic lines written in to add richness. As an example, paying a string arranger £40 per hour to spend a couple of hours correctly notating and orchestrating will potentially save hours in the studio and the musicians will be able to go in and just play everything right first time from a properly written score, using each instrument to it’s full potential.
One of the most wide ranging techniques on a bowed stringed instrument is what is commonly referred to as staccato. In essence, staccato is where the notes are short and spiky - this can be achieved in different ways. The Martele (pronounced mart -el-lay) bow stroke is where the bow is gently pressed to the string and released rapidly to create a little ‘kick’ or accent at the beginning of each note. It can be played rapidly or slowly and there is generally a small gap between each note. Whereas this would be rarely applied for a commercial string session on a pop or rock track, it could be used in a more classical sound - perhaps for a film soundtrack or television production.
The spiccato bow stroke is what is commonly referred to as ‘off the string bowing’ because the bow leaves the string at the end of each stroke. This gives the music a distinctive sound which can be used in a variety of different context as it’s so versatile. Spiccato bowing is great for rapid scales and will create a ‘brilliant’ effect (as in bright) or could be applied in a slower and heavier passage to add drama.
Adding variety with spiccato and martele bowings can accentuate the strings by using the whole section, or just one group of instruments (for example, only violas) and both are widely used ways of adding interest or energy when orchestrating for strings.
This week we contributed to two contrasting recording projects - one for some final year students at SAE in Oxford where the studio was absolutely state of the art and the particular studio we were in used a lot of analogue recording equipment including an old analogue valve mixing desk. The recording was part of an assignment for the students and their brief was to record 4 acoustic instruments on top of guitars / drums etc, with three tracks all in all. The session involved some music which was already scored and some which we were asked to improvise in order to fulfill the assignment brief.
On Monday we were asked for something totally different - working with a talented singer songwriting partnership who needed string quartet parts adding to some tracks which were almost finished. As I’d been asked to arrange the strings for two of the tracks, we’d been working together all week via email with small adjustments to get the strings sounding as close to the composers ideas as possible - this is a process which requires patience as often several revisions are needed before the song is ‘just right’. It’s always gratifying to get into the studio and finally record the parts - and after all the careful arranging work, we laid down the strings at the Dairy Studios in Brixton. The session ran smoothly and we recorded three songs with very few ’second takes’ needed. Although the majority of the music was scored for string quartet, there were a few bars where the sound needed to be thickened up with an extra violin or viola part, so I stayed on and carefully overdubbed a few phrases at the end to give a larger string sound.
Pizzicato is simply a technique where the strings are plucked rather than bowed (arco). It is a great tool to add variety to a piece and can enhance the rhythmic vitality of a section. As the tension of violin strings is higher than that on guitars, plucked notes tend to give an immediate response with a slightly ‘tight’ sound and a rapid decay.
When used in a full string section, pizzicato can cut through other textures without sounding abrasive, but can also be used to add a touch of humour or quirkiness to a song. Often single notes can be picked out or plucked as part of a counter melody, or if a single chord needs to be struck, 2, 3 or even 4 notes can be simultaneously plucked. In this instance, a knowledge of the tuning of stringed instruments is needed as the spacing of the chord is unique to the string family (being tuned in fifths). A string arranger has to take into account that on a given chord, there is a big spread of notes and it’s important to know which finger takes each string so that the chord ends up being playable by your session musicians.
When writing for stringed instruments, it’s always important to keep in mind how the four strings are tuned unless the lines are very simple. If the parts have been written on a keyboard, they may not necessarily be playable on a violin, viola or cello so unless the composer is a professional string arranger, having a string player check them through is advisable before entering the studio.
Although usually used sparingly, adding some pizzicato effects can be a great way to bring some bounce and life to a string arrangement. Plucked strings can be soft and subtle or really dramatic.
