What is the name for a choral hymn to dionysus?

A dithyramb is a choral hymn to Dionysus, the Greek god of wine and fertility. Dithyrambs were typically performed by a chorus of fifty men, who danced and sang in honor of the god. The hymns were often improvised, and they often included elements of comedy and satire. Dithyrambs were an important part of the Dionysian festivals, and they played a significant role in the development of Greek drama.