2010. TVF art doc cinema: The Endless Story of Fluxus. Two fragments of a composition by Mieko Shiomi (Osaka, 1938), at four and five in the series. First a requiem for George Maciunas recorded in Venice in 1990, secondly, titled Disapering Music for Face, recorded in 1992 in Malmö.
Cambridge Dictionary doesn't have disaper, which suggests that it should have been Disappearing Music.