Effective period / Period of releases: 1973

Members: Lee Charlton, Luis Peralta, Bruce Cale, David Wheat, Richard Waters, Wolfgang Melz, Roy Harte, Patty Young, Trey Eichelberger, Olon Belcher, Bryce Rohde

An experimental outfit formed in 1967 based in the San Francisco Bay Area, USA.
Gravity Adjusters Expansion Band involved free jazz musicians and talents from other genres, bridging free jazz and the avant-garde. Their works also featured home made instruments and sound sculptures, some the inventions of multi-media artist Richard Waters.
They are popularly compared to other such ensembles of the time like: AMM, MEV, Sonde or Taj Mahal Travellers.