Tracklist

1	Improvisation 21	9:28
2	Improvisation 22	2:36
3	Improvisation 23	12:13
4	Improvisation 24	8:03
5	Improvisation 25	2:02
6	Improvisation 26	5:47
7	Improvisation 27	6:27
8	Improvisation 28	3:36
9	Improvisation 29	5:50
10	Collective Improvisation 1	7:07
11	Collective Improvisation 2	13:11

Companies, etc.

• Record Company – Universal Classics & Jazz
• Distributed By – Victor Entertainment, Inc.

Credits

• Alto Saxophone, Harmonica – Kaoru Abe* (tracks: 3, 8, 10, 11)
• Double Bass – Motoharu Yoshizawa (tracks: 1, 7, 10, 11)
• Drums, Percussion – Toshi Tsuchitori (tracks: 1, 4, 7, 10, 11)
• Electric Guitar, Acoustic Guitar – Derek Bailey (tracks: 1 to 4, 7 to 11)
• Engineer [Assistant] – Teruaki Igarashi
• Engineer [Recording, Remix] – Akio Itoh*
• Producer – Hideto Isoda
• Tenor Saxophone, Alto Saxophone, Soprano Saxophone – Mototeru Takagi (tracks: 3, 5, 6, 8, 10, 11)
• Trumpet, Alto Horn – Toshinori Kondo (tracks: 2, 5, 6, 9 to 11)

Notes

Recorded at Polydor 1st Studio, Tokyo, 19th April, '78.
Remixed at Polydor 2nd Studio, Tokyo, 3rd, May '78.

Original LP previously released on Kitty Records (Category MKF 1034)
Original CD released 1992 on DIW (Category DIW-358)

Tracks 8 to 11 do not appear on earlier issues.

Packaged in mini LP-style sleeve with OBI. 24-bit digital remastering. Part of the 'The...music hardcore jazz' series.

Barcode and Other Identifiers

• Barcode: 4 988005 340498
• Rights Society: JASRAC

Other versions

Category	Artist	Title (Format)	Label	Category	Country	Year
MKF 1034	Derek Bailey	Duo & Trio Improvisation ‎(LP)	Kitty Records	MKF 1034	Japan	1978
DIW-358	Derek Bailey	Duo & Trio Improvisation ‎(CD, Album)	DIW	DIW-358	Japan	1992

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