The crossword solutions for the term BAND BUY are AMP (3 letters) and DRUMSET (7 letters). An amplifier, or amp, is an electronic device used to increase the volume of sound signals. It is a common piece of equipment in a band's setup, and is often necessary to buy when starting a band. A drumset is a collection of drums, cymbals, and other percussion instruments that are played together by one person. Drum sets are also a common piece of equipment in a band's setup, and are usually necessary to buy when starting a band.