Charlie Cowell is one of the premium acting-only roles. Consider having the actor playing Charlie perform in the ensemble or as a teen dancer or townsperson-just make sure it's clear he's NOT playing Charlie Cowell in those scenes. Cast a strong actor with a good loud voice who is a bit of a ham and likes being on the stage. He has to be comfortable kissing Marian, and should have a good sense of comic timing. Charlie is a good choice for an understudy to Harold Hill.