Wikipedia
In addition to his singing abilities (which encompassed a wide range from falsetto to baritone and rapid, flamboyant shifts of register, as well as diverse characterisation) Prince was one of pop music's most prominent multi-instrumentalists. The precise number of instruments he was capable of playing remains obscure, partly due to the active mythologizing of his abilities and working practices (such as the claim that he had played "all 27 instruments" on his debut album, which appears to have included various different kinds of guitar, keyboard and synthesizer in the total).
As a live performer he generally focused on guitar, piano, lead vocals and occasional bass, drums and harmonica. On recordings he also played assorted keyboards and synthesizers, bass guitar, drums, various percussion instruments and saxophone, as well as mastering both drum and synthesizer programming. Prince mentioned learning and performing simple parts on particular instruments that he does not otherwise play (such as concert harp) in order to serve song arrangements on albums.