Instead of jazz/jam/funk, this is jazz/jam/rock, which means that when it doesn’t lean toward fusion, it veers toward art rock. Gravity A distinguishes itself with an appealingly spacious sound that is often lush and mellow. The head arrangements are attractive as well, with Andrew Meehan’s keyboards establishing a bed for Aaron Lind’s jittery guitar lines. Once soloing starts, though, my attention wanders. The players rarely sound confident, a problem highlighted by contrast with guest Tim Solomon’s adventurous sax solo on “Requiem.” It’s nice to hear a band that can set and maintain a mood, but it would be nice to hear more personality.