jam session

US /ˈdʒæm ˌseʃ.ən/
UK /ˈdʒæm ˌseʃ.ən/
"jam session" picture
1.

sesi jam, jamming

an informal gathering of musicians to play improvised music together

:
The jazz club hosts a weekly jam session.
Klub jazz mengadakan sesi jam mingguan.
They ended up having an impromptu jam session in the living room.
Mereka akhirnya mengadakan sesi jam dadakan di ruang tamu.