Also Read: Cecily Strong to Star in Apple Musical Comedy From 'SNL' Creator Lorne MichaelsThe streaming service plans to launch the show next year.Key will be playing Josh, Melissa’s (Strong) long term, pragmatic partner, and the last person who wants to be stuck in this magical town. Cumming is taking on the role of Mayor Menlove, the welcoming mayor of the town with a secret (and a song) in his heart.