Hal Leonard is the largest sheet music publisher in the world. The company was founded in 1947 in Winona, Minnesota, by Harold "Hal" Edstrom, Everett "Leonard" Edstrom, and fellow musician Roger Busdicker. Hal Leonard produces sheet music, songbooks, and method book packs, and band and choral arrangements, reference books, instructional DVDs, videos CD-ROMs, ShowTrax instrumental accompaniments, and music software.