1. MS Mus. 1804/1/6 Reference (shelfmark): MS Mus. 1804/1/6 Title: Thea Musgrave: 'The Voice of Ariadne', chamber opera Scope & Content: Chamber opera in three acts. Libretto by Amalia Elguera based on Henry James's 'The Last of the Valerii'. Tape in collaboration with Richard Rodney Bennett. Collection Area: Music Collections Languages: English Date Range: 1970-1995 Extent: 6 volumes