Pat Metheny, Unity Band (Nonesuch). Nine new compositions by the master guitarist, all performed by his latest working band, a quartet that features Chris Potter on tenor saxophone. This is the first time that Metheny has recorded as a leader with a saxophonist since 1980, and Potter’s presence is galvanizing. All hands–including Ben Williams on bass and Antonio Sanchez on drums–play with colossal vitality. This one’s a keeper (TT).