Sesame Street Records released their first series of book and record sets in 1981, featuring audio versions of some of their most well-known storybooks. Many of these sets featured the voices of the show's cast members, as well as a Sesame Street song after the story was completed. The first 24 titles have been reissued many times on records and cassettes since then, usually on the record company currently producing Sesame Street music titles. However, Fisher-Price also produced some titles in the 1980's. Later reissues appeared on Golden Music and Sony Wonder, along with new titles. In 2007, Studio Mouse began making a new series of book and CD sets.