★Wergo

Hindemith's Three Pieces for cello and piano, Op. 8 (1917), and the Cello Sonata, Op. 11 No. 3 (1919-21), played by Julius Berger and Siegfried Mauser. Volume I of their Hindemith cello and piano series.

Hochschul-Percussion Trossingen under Hermann Gschwendtner play percussion works by Regner, Brouwer, Henze (Five Scenes from the Snow Country, marimba), Heider and Hiller. Recorded 1981 and 1984.

Charles Ives's shorter piano pieces, from Study No. 20 to the Three Quarter-tone Pieces for Two Pianos, played by Herbert Henck with Deborah Richards. Recorded July 1984 at the Bayerischer Rundfunk, Munich.

Four CDs of the pianist Grete Sultan, recorded in New York 1969-2000: Bach's Goldberg Variations, Beethoven's Diabelli Variations, Schubert, Schumann, and twentieth-century works by Schoenberg, Copland, Weber, Wolpe, Hovhaness, Cage and Ichiyanagi.

Five computer music works by Chris Chafe, David Jaffe and William Schottstaedt, made at CCRMA, Stanford, between 1982 and 1986 with the Samson Box digital synthesizer; produced by David Jaffe.

Michael McNabb's Invisible Cities, made at CCRMA, Stanford, and first conceived in 1985 for dance theatre after Italo Calvino: six pieces for computer, synthesizer, piano (Artis Wodehouse) and soprano saxophone (McNabb).

Michael Obst's quadraphonic electronic trilogy Crystal World (1983-86) with its Intermède, made in Cologne, at EMS Stockholm and at IRCAM; produced by Obst in the audiorent studio, Recklinghausen.

Spring in the wetlands of Lake Constance, the Vorarlberg Rhine Delta and the Bodanrück: birds, frogs and toads recorded by Walter Tilgner between 1984 and 2003, assembled as a "Wetland Wildlife Chorus".

Winter visitors and migrant birds at Lake Constance (Untersee, Gnadensee and the Rhine Delta of Vorarlberg), recorded by Walter Tilgner between 1987 and 2003 and assembled into one winter soundscape.

Skylark, nightingale, thrush nightingale, song thrush, blackbird and golden oriole, recorded by Walter Tilgner between 1984 and 1999 in Austria and Germany with Neumann dummy-head microphones.

The red deer rut on the Darss peninsula on the Baltic coast of Germany, recorded by Walter Tilgner in September 1994 with a Neumann KU 100 dummy head, from midday to dawn; booklet with sonograms. Bonus: a 1934 shellac by Ludwig Koch.

The song of the red-spotted and the white-spotted bluethroat, a mimic of other birds, frogs and bells, recorded digitally by Walter Tilgner; released in 1992 in Wergo's Natural Sound series.

Nightingale song recorded by Walter Tilgner on the nights of 14, 21 and 29 May 1983 along the Reichenaudamm at Lake Constance: nightingales at night and at dawn with the waking chorus of other birds.

The four seasons in a mixed beech wood and the red deer rut in a mountain forest, recorded digitally by Walter Tilgner, mostly with a Neumann binaural dummy head, and assembled without further sound processing.

Music of the Hamar of southern Ethiopia, recorded between 1970 and 1976 by the ethnologist Ivo Strecker: musical bow, flute, lyre, dance and war songs, speech and ritual, with a 94-page book.

Soundwalk through a Santal village near Santiniketan, West Bengal, from morning to night, with songs, dances and daily life. Recorded in November 1994 by Peter Pannke and Andres Bosshard.

Carimbó dance music from Pará, Brazil, by Verequete (Augusto Gomes Rodrigues) and Grupo Uirapuru, recorded live in the studio in Belém on 29 and 30 January 2000.

Tài tử music from southern Vietnam played by Vũy Chỗ, Ba Tu, Phạm Văn Môn and Đoạn Văn Dũng on zithers, lutes, guitar, flute and violin, recorded on 26 May 1999 at Sender Freies Berlin.

Tunisian singer and oud player Lotfi Bouchnak in concert in Berlin on 18 April 1998, with classical Arabic songs and a few popular titles.

Hindustani bansuri music by Steve Gorn, with Samir Chatterjee (tabla) and Annalisa Adami (tanpura), in memory of his teacher Gour Goswami. Recorded on 24 March 1996 at Sender Freies Berlin.