Impact of new instrumental possibilities for composing thinking

The work describes the concept of disklavier Yamaha (player-piano) with electronics, the concept of a sampler with sampled human voice controlled by an Ondéa interface (Martenot waves) by J. Krejčík and the concept of the interactive piano by J.-C. Risset. The examples of pieces composed on the basis of these concepts show, how these concepts have affected their definitive music form. The work undertakes a review of the relationship between a musician's gesture and an instrument interface and its relevance to musical perception and thinking. . The work is complemented with a summary of the historical development of player-piano, and Martenot waves