Resource Maria Grenfell: Blue Green Red Black - CASSETTE Cassette Audio/visual Borrow × Borrow/Hire: To borrow items or hire parts please email SOUNZ directly at [email protected]. Featuring 2 Featuring Blue Green Red Black for percussion ensemble of four players by Maria Grenfell in 1996 14m Perpetual Motion for five percussionists by Maria Grenfell in 1990 3m