Recorded at Lennie's On the Turnpike, outside Boston, in April, 1965, this is a raucous session that leaves you sweating and smiling. Byard played piano in all styles, with equal intensity, pushing the boundaries of rhythm and harmony, stopping just short of crashing through them. His quartet was a dynamo: Alan Dawson, drums; George Tucker, bass; and the underrated, high-flying Joe Farrell on sax. There's a looseness to this session — you can hear Byard shouting out instructions — but it's a joyful looseness, the crackling energy that fills a room when restraints are lifted and the players ride on their wits.