BMOS is a male voice choir of over 40 members established in 1998. The songs include old favourites and new songs from Musicals, the Classics, Gospel, Australian, Folk, Pop, even Rock'n'Roll - all with the unique BMOS style, musicality, humour and entertainment". The choir rehearses on Monday evenings at St Augustine's Community Centre, Mangles St in Bunbury at 7:00 p.m.