Mainly a karaoke venue!
Part of an international chain providing "drinks plus entertainment" this is a venue with a ground-floor bar plus an outside terrace. Down below in the BAM BAM Bar there is food, drink and live music before or after experiencing one of the 22 private karaoke rooms. Various keg and bottled beers are available, plus a limited but interesting food menu.
BAM is an abbreviation of "boite a musique" or music box in English; as of course you knew.
BAM Karaoke Box, London