English version

jam session

From Longman Dictionary of Contemporary English
Related topics: Music
jam sessionˈjam ˌsession (also jam) noun [countable]  APMan occasion when jazz or rock musicians play music together in an informal way
Examples from the Corpus
jam sessionThen on Sunday night all styles will merge in a monumental jam session.Baker was first heard no record in a public jam session of 1941 and quickly established an unbeatable reputation in London clubs.
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