Wiktionary
n. (jam session English)
Wikipedia
Jam Sessions is a guitar simulation software title and music game for the Nintendo DS based on the Japan-only title Sing & Play DS Guitar M-06 (Hiite Utaeru DS Guitar M-06) originally developed by Plato. It was brought to North America and Europe, courtesy of Ubisoft. The game is infamous for its Australian ad campaign, which features a child swearing at his mother over sponge cake, despite the game being rated G in Australia.
Usage examples of "jam sessions".
Tommy used to sit in on their jam sessions on Sunday afternoon at The Barroom Floor.
Eventually, the lessons simply became jam sessions of experimenting, and Tannim began teaching Chinthliss a thing or two.
When I was older, he even let me sit in on a few jam sessions with his band, and I was ecstatically happy.
The place was so full of fingerprints from all our parties and orgies and late-night jam sessions, nobody would ever find us.
I had to show him family courtesy when he was visiting my shadow, but he put a big strain on my nerves, bringing those people around at all hours-jam sessions, poker parties.