The Sonata for cello and piano introduces a 'novel imaginary instrument', a cello piano which is played in a mysterious way, as if by a musician. This metaphorical instrumentation creates a metaphorical composition, a kind of instrumental 'monodrama for three persons', as stated by Silvestrov. In this case, the 'third person' is the pedal which not only provides additional timbre but is also meant to be an independent part. The composer requires from it a 'particularly sensitive' response to the...