Kapustin demands a "straight-eighth" feel with a slight behind-the-beat "blues" lag on the melody notes. Study recordings of Kapustin playing his own works (available on YouTube or Naxos). He plays it incredibly clean, but with a lively bounce.
: It starts with a theme based on the opening of Stravinsky’s The Rite of Spring Nikolai Kapustin Variations Op 41.pdf