noun
battle of the bands; joint concert
Abbreviation of 対するバンド. Refers to an event where two or more bands perform together, often in a competitive or showcase format. Common in music scenes.
来月、地元のライブハウスで対バンがある。
Next month there's a battle of the bands at the local live house.
あのバンドと対バンするのが夢だった。
It was my dream to do a joint concert with that band.