Richard Toop (1 August 1945 – 19 June 2017)[1] was a British-Australian musicologist.
[2] He studied at Hull University, where his teachers included Denis Arnold.
[3] In 1973 he became Karlheinz Stockhausen's teaching assistant at the Staatliche Hochschule fur Musik in Cologne.
[3] His publications include a monograph on György Ligeti, and the New Grove entries on Stockhausen and Brian Ferneyhough.
[4] As a young pianist in 1967, he gave in a 24-hour marathon in London the first documented solo performance of Vexations by Erik Satie.