My boys are both musicians – that’s actually how they got into MT in the first place – and have been cast in musician-actor roles and have had dual roles at summerstock / professional theatres (where they were actors but also assistant music director or music director for the kids’ shows, for example). IMHO, it isn’t a deal breaker to not play an instrument, but if you can play, it’s a great asset. Moreover, if you can play and understand music & music theory, you can WRITE music / songs / musicals and/or produce your own cabarets, thereby creating your own work and opportunities for you and your friends! THAT’s magical and I know @soozievt knows what I mean. And even if you don’t write music, perhaps you are a lyrical genius and can write lyrics or book – team up with friends and write the next big show!!!