Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great musicians, pity about the pianist.

Slide Hampton in fine form, backed by a great bass player (Niels-Henning Orsted Pedersen) and a legendary drummer (Philly Joe Jones)... too bad the pianist (Joachim Kuhn, unbelievably self-centered and brimming with boy-genius mannerisms) almost spoils the session. I say "almost" because on one tune (J.J. Johnson's "Lament") Kuhn actually manages to summon enough restraint to avoid wrecking the proceedings.