On Metamorphism, pianist and composer Russ Lossing checks in with close associates Loren Stillman (alto/soprano sax), John Hébert (bass), and Michael Sarin (drums) and offers a set of probing, tonally rich original music. The pieces vary widely in mood and relative complexity, with composed and improvised elements in harmonious balance, involved unison passages and supple rhythmic interplay in and out of tempo. “Three Treasures,” “Pileatus,” and “June Jig” have an agitated staccato air, while “Sojourn” and “Mai” conjure a darker lyricism. The affecting title track is a tribute to the late Paul Motian, revered drummer/composer, who featured Lossing and Stillman in his bands on many occasions.