Four American composers, all pianists, all prizewinners at the height of their powers. It is not surprising that the works collected here are idiomatic to the instrument and gratify ing to play. Augusta Read Thomas explores the piano’s natural resonance and beauty. Wayne Peterson’s expressive, sweeping virtuosic lines reflect his past as a jazz pianist. Charles Wuorinen’s bracing rhythms leap across the instrument in a modernist romp that echoes the wit and humor of his opera. Eric Moe’s Afro-bebop encore rounds out the program.