jam session

[ jam sesh-uhn ]

noun

1. Music.
   1. a meeting of a group of musicians, especially jazz musicians, to improvise, experiment, or play for their own enjoyment.
   2. an impromptu musical performance, especially of jazz.
   3. a special performance by musicians, especially jazz musicians, who do not regularly play together.
2. an informal, freely collaborative meeting, conference, or discussion:

   The event was a laid-back jam session for creatives to get together and network.

jam session

noun

1. slang.
   an unrehearsed or improvised jazz or rock performance

Word History and Origins

Origin of jam session¹

First recorded in 1930–35; perhaps jam ¹, or shortening of jamboree

Word History and Origins

Origin of jam session¹

C20: probably from jam ¹

Example Sentences

“On the Adamant” is like a jam session, too — a jumble of bright spots and tedious meanderings.

From New York Times

But it was during this first jam session that they realized how well they complement one another and discovered their shared love of wide-ranging musical taste, especially musical theater.

From Los Angeles Times

Participants are encouraged to wear traditional regalia and bring their own instrument, such as a drum, rattle or flute, to join the jam session.

From Seattle Times

A handful of musicians with violins, guitars and a small harp played an impromptu jam session beneath a tree nearby.

From Seattle Times

Since taking a break from Hollywood for his health, Willis has been spending time with his loved ones — including a jam session with friends and welcoming a grandchild.

From Los Angeles Times