20th century classical Alvin Lucier ambient ambient/drone AMM Another Timbre avant-jazz avantgarde Black Truffle contemporary classical dark ambient drone eai ECM Editions Mego electroacoustic Elsewhere Erstwhile experimental experimental electronic field recordings free impro free jazz Hubro Japan John Tilbury Jürg Frey Keith Rowe Melaine Dalibert Michael Pisaro minimalism modern classical Morton Feldman new age noise Norway reductionism Reinier Van Houdt Rune Grammofon Sarah Hughes silence Sofa Music sound art Unseen Worlds Wandelweiser