 Rejection of the bop aesthetic was combined with a fascination with earlier styles of jazz, such as dixieland with its collective improvisation, as well as African music.Interest in ethnic music resulted in the use of instruments from around the world, such as Ed Blackwell's West African talking drum, and Leon Thomas's interpretation of pygmy yodeling.Ideas and inspiration were found in the music of John Cage, Musica Elettronica Viva, and the Fluxus movement.