design Sascha Kleis
tracks 2-1 to 2-9 engineer Bernie Kirsh
tracks 1-1 to 1-9 engineer Jan Erik Kongshaug
tracks 3-1 to 4-6 engineer Martin Wieland
tracks 2-1 to 2-9 executive-producer Manfred Eicher
liner notes Steve Lake
photography by Ib Skovgaard Petersen
photography by [booklet (p. 3)] Ralph Quinke
piano Chick Corea
tracks 2-1 to 2-9 producer Chick Corea
tracks 2-1 to 2-9 producer Gary Burton
tracks 1-1 to 1-9, 3-1 to 4-6 producer Manfred Eicher
vibraphone Gary Burton
tracks 1-1, 1-4, 1-5, 1-8 to 2-5, 2-7, 2-9. 3-1 to 3-4, 4-2, 4-4, 4-5 written-by Chick Corea
Phonographic Copyright (p) ECM Records GmbH
Copyright (c) ECM Records GmbH
Made By EDC, Germany
Recorded At Arne Bendiksen Studio
Recorded At Delphian Foundation
Recorded At Limmathaus, Zurich
Crystal Silence:
Recorded November 1972 at Arne Bendiksen Studio, Oslo

Duet:
Recorded October 1978 at Delphian Foundation, Sheridan/Oregon

In Concert, Zürich, October 28, 1979:
Recorded at Limmathaus, Zürich


Tracks 4-1 and 4-2 available for first time on CD.

Cardboard cap box with 32 page booklet

4-CD Set

℗ 1973, 1979, 1980 ECM Records GmbH (on box backside and in booklet)
© 2009 ECM Records GmbH
℗ 1973 ECM Records GmbH (on disc 1)
℗ 1979 ECM Records GmbH (on disc 2)
℗ 1980 ECM Records GmbH (on discs 3 and 4)

Printed in Germany
Barcode: 602517680579
Rights Society: GEMA
Label Code: LC 02516
SPARS Code: AAD
Other: ECM 2036 (Catalog Number Disc 1)
Other: 176 8058 (Catalog Number Disc 1)
Other: ECM 2037 (Catalog Number Disc 2)
Other: 176 8059 (Catalog Number Disc 2)
Other: ECM 2038 (Catalog Number Disc 3)
Other: 176 8060 (Catalog Number Disc 3)
Other: ECM 2039 (Catalog Number Disc 4)
Other: 176 8061 (Catalog Number Disc 4)