Supersister were a Dutch avant-garde/jazz-rock band that issued five albums on Polydor between 1970 and 1974.

Members: Robert Jan Stips (vocals, keyboards), Sacha van Geest (flute, 1968-73, 2000-01), Marco Vrolijk (drums, 1968-73, 2000-01), Ron van Eck (bass), Rob Douw (vocals, 1968), Herman van Boeyen (drums, 1973-74), Charlie Mariano (alto saxophone, soprano saxophone, flute, nagaswaram, 1973-74), Elton Dean (saxophone, 1974)

Supersister was formed in 1967 as a school band by teenage keyboardist Robert Jan Stips. They initially performed as Sweet OK Supersister with five members, including a brief-serving vocalist. By 1968, they settled on the name Supersister with Stips, flautist Sacha van Geest, bassist Ron van Eck, and drummer Marco Vrolijk. As they worked up a setlist, they were heavily influenced by the fuzz-bass runs and asymmetric meters of Volume Two, the 1969 second album by UK jazz-rock/psych trio Soft Machine.


  • Present From Nancy (1970)
  • “She Was Naked” / “Spiral Staircase” (1970)
  • To the Highe$t Bidder (1971)
  • Pudding en Gisteren (1972)
  • Iskander (1973)
  • Spiral Staircase Sass (1974 • Sweet Okay Supersister)


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