"Hail, Hail, the Gang's All Here" is an American popular song first published in 1917. Sullivan was an English composer best known for his comic musical opera collaborations with the librettist W. S. Gilbert. His works also include 23 operas, 13 major orchestral works, eight choral works and oratorios, two ballets, incidental music to several plays, and numerous hymns and church pieces. Classic Music Collection constitutes an extensive library of the most well-known and universally-enjoyed works of music ever composed, reproduced from authoritative editions for the enjoyment of musicians and music students the world over.