Tracklist

A1	Palm Grease	10:34
A2	Actual Proof	9:41
B1	Butterfly	11:18
B2	Spank-A-Lee	7:11

Credits

• Cover – Rob Springett*
• Drums – Mike Clark
• Electric Bass – Paul Jackson
• Electric Piano [Fender Rhodes], Clavinet [Hohner D-6], Synthesizer [Arp Odyssey, Arp Soloist, Arp 2600, Arp String] – Herbie Hancock
• Engineer [Recording Engineer] – Fred Catero
• Percussion – Bill Summers
• Producer – David Rubinson, Herbie Hancock
• Soprano Saxophone, Tenor Saxophone, Bass Clarinet, Alto Flute – Bennie Maupin
• Written-By – Bennie Maupin (tracks: B1), Herbie Hancock, Mike Clark (tracks: B2), Paul Jackson (tracks: B2)

Notes

Produced for David Rubinson & Friends, Inc.
Recorded at Wally Heider Studios, San Francisco.

with green cap-obi and two inserts

Other versions

Category	Artist	Title (Format)	Label	Category	Country	Year
PC 32965	Herbie Hancock	Thrust ‎(LP, Album)	Columbia	PC 32965	Canada	1974
25AP 563	Herbie Hancock	Thrust ‎(LP, Album, RE)	CBS/Sony	25AP 563	Japan	1977
SMM 503449 2	Herbie Hancock	Thrust ‎(CD, Album, RM, Dig)	Sony Music Media	SMM 503449 2	France	2001
CBS 80193	Herbie Hancock	Thrust ‎(LP, Album)	CBS	CBS 80193	Italy	1975
PCA-32965	Herbie Hancock	Thrust ‎(8-Trk, Album)	Columbia	PCA-32965	US	1974

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