ban

n : A slang way of writing band (バンド). An ateji originally used on 2ch but now used pretty extensively

bandoman
バンドマン

n : A bandman. Can either be used to reference a member of a band in question or simply any person who plays in a band

bandouuman
バンドウーマン

n : A bandwoman. Due to the increase in female-fronted or all-female visual bands, this term has grown in usage

bangyaru
バンギャル

n : lit. "bandgirl" - In the loosest terms, a fan of visual music. However, many fans will not refer to themselves as bangyaru, since it tends to have a negative connotation (i.e. the girls who are obsessed with a band and follow them everywhere)
also written: バンギャ (bangya), ギャ(gya)

bashotori
場所取り

v : lit. "take a place" - 1. To reserve your spot in a livehouse, usually by placing a towel or other item on the floor or bar 2. To have someone with a lower number ticket leave a spot for you up front. 2 is considered rude, but 1 is perfectly acceptable

bira
ビラ

n : Another word for a flyer
see also: chirashi

buppan
物販

n : The table where merchandise is sold at a livehouse. Can be either inside or outside depending on the place. Items sold at the buppan are photosets, towels, cellphone straps, etc. CDs and DVDs may also be sold, some of which are live-only and cannot be found elsewhere