Some cafes can coordinate live performance inside cafe. As far as I know, DUG (Shinjuku), NARCISSUS(Shinjuku), NO ROOMS FOR SQUARE (Shimokitazawa), JAZZ UNION (Harajuku), and maybe more.
Of course grand piano is not possible to be equipped, but upright piano is in some cafes OK.
Furthermore, they arranged recordings sometimes !!! Oh great !!!
Above is very famous. In 1995.
And today, we are lucky to had a chance to listen to Carmen McRae. (1973)
It is said that at previous DUG, sometimes live performances were held,but at the new place, not possible, they thought. But POSSIBLE after tried !!!!
It could be more intimate due to closeness to customers!