Gilbert and Sullivan were two English POETS who collaborated on a series of comic operas in the late 19th century. Gilbert wrote the librettos and Sullivan composed the music. They are best known for their works such as The Pirates of Penzance, The Mikado, and H.M.S. Pinafore. The crossword solutions for the term 'Gilbert and Sullivan' are SARAS, which stands for 'Savoyard Amateur Repertory Association Society', and POETS, which stands for 'POETS of England, Theatre and Song'.