ジャムセッションであれば
jamusesshondeareba
1. If it's a jam session; When it's a jam session
Noun
#272794
1. If it's a jam session; When it's a jam session
1. jam
1. session
2. jam session; jam
1. Let's…; Shall we…
1. To have someone do; To let someone do
1. Must do; Have to
1. Cannot have; Cannot do
1. If there is; If you have
1. Don't have.; Don't do.