The two pianos introduce the bass motif one after another. Every new entry brings an increase in tempo. Only when they play together, though, is the real 'Vivace unleashed. From then on, it is only in the 'largamente' sections and a lyrical middle section (cantabile) that the racing bass figure pauses for a while. The motif weaves its way through the course of the 'Toccata' like a 'perpetuum mobile', bringing ever more complex layering to the structure of the movement. The Latvian composer Peter...