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Turbo is a piece of acousmatic music. It draws on three separate sound sources namely two Formula One cars which raced when I was young, the Lotus 97T and the Ferrari 412 T2, as well as a Scalextric set. These three sources form the basis of the track with the remaining sounds derived from them or synthesised from first principals.
The engines of that era sounded very different. It was a less regulated time, before the advent of widespread electronics, the introduction of hybrid engines or the level of concern about petrochemicals and their environmental impact. While there have been many changes for the better over the last thirty years in F1, the sound of the grid is not one of them.
While working with the audio to create something musical rather than a historical document several things jumped out at me. Firstly it is amazing how melodic these vehicles are. From the chord of D and A created by snapshot sample of a car in the distance to the almost choir-like textures created by zooming right in on only a very narrow set of frequencies it really should not have been a surprise how ‘tuned’ race cars are. Secondly, the sounds are highly cyclical, but in an evolving way which can be exploited to find not only glitchy textures but also built on and augmented.
As well as drawing on the sounds of the turbo engine the idea of a turbo spiral extends into the structure of the work. There are four main sections to the music which repeat and develop with increasing rapidity. If you travelled around a spiral at a constant speed you would find a new section of music every ninety degrees. As the spiral tightens the sections become shorter, leading to a whirling inexorability in the final stages.
This idea of structural acceleration extends to a Ferrari engine sound heard throughout the work. It starts very low and slow; five-thousandths of its original speed and then gradually ramping up to become audible, first as a bassy rumble before transforming into glitchy background antics before flying past at full speed at the end.
Creating this piece has been an interesting challenge; trying to balance something which is intellectually rigorous (e.g. the golden-spiral mapping and computing), along with creating something which is engaging to listen to. I have tried to convey something of the excitement and nostalgia the source sounds bring to me, but also that tranquil space that you find in split seconds of extreme focus, the loudness and brutality of the spectacle, and hopefully something beautiful.