One of the first things that Lully and Beauchamps worked together on was "Les Fêtes de l’Amour et de Bacchus", which they called "opéra-ballet". The "opéra-ballet" is a form of lyric theatre in which singing and dancing were presented as equal partners in lavish and spectacular stagings. The "Les Fêtes de l’Amour et de Bacchus", one of their first and most famous collaborations, consisted of excerpts from court ballets linked by new "entrées" stages by Beauchamps. Customarily, King Louis and courtiers danced in the court ballets; however, in this new form of entertainment, the "opéra-ballet", all of the dancers were professionals. Beauchamps not only collaborated with Lully, but he also had the great privilege to partner with Molière during his lifetime.