Thrust

1. A1 Palm GreaseHancock 10:34
2. A2 Actual ProofHancock 9:41
3. B1 ButterflyMaupin, Hancock 11:18
4. B2 Spank-A-LeeHancock, Clark, Jackson 7:11

• Mike ClarkDrums, Written-By
• Paul JacksonElectric Bass, Written-By
• Herbie HancockElectric Piano (Fender Rhodes), Clavinet (Hohner D-6), Synthesizer (Arp Odyssey, Arp Soloist, Arp 2600, Arp String), Producer, Written-By
• Bill SummersPercussion
• Bennie MaupinSoprano Saxophone, Tenor Saxophone, Bass Clarinet, Alto Flute, Written-By

• David RubinsonProducer

Also credited. Cover: Robert Springett. Engineer (Recording): Fred Catero. Lacquer Cut By: Rob LoVerde.