In Medieval times, the rondeau was often performed. In this form, the lead singer sings the verses while a small choir sings the refrain. During the 14th century, knowledge in music theory helped singers improve their performance. By the 15th century, there was strong support for choral music and it was on such high demand that composers wrote many vocal works. Johannes Ockeghem was one of the most influential composers of this period.
The Latin Mass became one of the most important musical forms of the Renaissance. Hundreds of mass settings were written by composers during this time.
Composers such as Josquin Desprez wrote choral music.