By Tony Scherman
Updated May 12, 1995 at 04:00 AM EDT

Pianist Onishi, 27, is a fleet and fearless improviser, a genuine jazz musician who can rethink a classic like Berlin’s ”Blue Skies” or toss off gorgeous instant melodies. On her second American album, she benefits from the great rhythm section of ex-Wynton Marsalis drummer Herlin Riley and bassist Reginald Veal. Onishi’s one flaw: occasional muddy sound. B+