The Band Sergeant Major (BSM) is the senior playing musician in a British Army band and holds the rank of Warrant Officer Class 2. He also functions as the band's senior non-commissioned officer, has various administrative duties and is trained in conducting. Prospective BSMs attend a special three-week course at the Royal Military School of Music, one of which is run every year. The equivalent rank in the Household Cavalry is Band Corporal Major (BCM).