jam session
: an often impromptu performance by a group especially of jazz musicians that is characterized by improvisation
Recent Examples on the Web
//There will also be concerts and lots of jam sessions.
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Phil Marty, chicagotribune.com, "German Christmas market, vintage train rides and more Midwest events," 9 Nov. 2019
//These religious jam sessions were largely private, but a trickle of social-media content—and also a special edition of Sunday Service that was live-streamed from Coachella, in April—hinted that West perhaps was onto something.
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Carrie Battan, The New Yorker, "Kanye West’s True Salvation on “Jesus Is King”," 27 Oct. 2019
//Carlos Santana, Mickey Hart from the Grateful Dead, Cyndi Lauper and others would stop by for jam sessions.
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Shwanika Narayan, SFChronicle.com, "One of the last music stores in San Francisco is closing," 14 Sep. 2019
//Mimicking the intimate setting of a jam session in the woods, Club Passim’s Campfire Festival aims to connect more than 100 up-and-coming artists with new listeners and with one another.
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BostonGlobe.com, "Five things to do around Boston, Aug. 26-Sept. 8," 2 Sep. 2018
//More than a series of concerts, the Convention includes workshops, talks and jam sessions that bring some of the country’s finest old-time music practitioners into direct contact with fans and aspiring players of all ages.
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Andrew Gilbert, The Mercury News, "Berkeley Old Time Music Convention is about more than music," 10 Sep. 2019
//Iron Mike's: Rough Cutt jam session, 4 p.m. July 28, 6357 S. 27th St., Franklin.
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Elaine Rewolinski, Milwaukee Journal Sentinel, "What’s going on in Milwaukee this week: July 26-Aug. 1," 25 July 2019
//Fire on Water: Jonny T-Bird & the MPs, 9:30 p.m. Sept. 6, 518 N. Water St.
Iron Mike’s: Steve Nitros & Friends jam session, 8 p.m. Sept. 6, 6357 S. 27th St., Franklin.
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Elaine Rewolinski, Milwaukee Journal Sentinel, "What’s going on in Milwaukee this week: Sept. 6-12," 5 Sep. 2019
//After a quick stop at a karaoke bar, the rest of the Objectivists, young and old, had filled the hotel’s rooftop bar for a jam session.
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Alexander Sammon, The New Republic, "The Last of the Ayn Rand Acolytes," 14 Aug. 2019
First Known Use of jam session
1933, in the meaning defined above
History and Etymology for jam session
Dictionary Entries near jam session