Persimfans
Persimfans was a conductorless orchestra in Moscow in the Soviet Union that was founded by Lev Tseitlin (or Zeitlin) and existed between 1922 and 1932. Its name is an abbreviation for Pervïy Simfonicheskiy Ansambl' bez Dirizhyora (First Symphony Ensemble without Conductor). Other orchestras were organized following its example, both in the USSR and abroad.