George Faison, the Tony Award-winning choreographer for the 1975 production, is organising the event at the Central Park Summerstage, and has recruited original cast members for The Wiz: A Celebration. Venerated Broadway hit and classic 1978 film. So when the time came to choose the next musical, the network opted for “The Wiz” over fellow possibility “The Music Man.” First (Dance) Steps “The Sou. Cabaret is a 1966 musical with…