When Pascal Gallois asked me to write a duo for bassoon and cello my first idea was to make an imaginary instrument by combining these two instruments which share a fairly similar pitch range.
However, rather than starting the piece with a two line counterpoint, I imagined the opening section to be like listening to twins talking: one talks but the other finishes the sentence.
Pascal then gave me a series of multiphonics, which made me feel like a little kid in a sweet shop! I picked the sounds I liked, then I built the harmony around those multiphonics.
The cello's quadruple stop, which is very classical cello writing, blends with the bassoon's multiphonics which almost fill the gaps between the four note chords played by the cello.
Dai Fujikura (edited by Harry Ross)