I see what you mean, Will, but can't {obviously as I do sing the songs} sympathise with it. When one sings, it is a performance, just as much as being in a play. One adopts a persona, recognised by convention by both one's audience and oneself, as not being one's own. Your attitude rather reminds me of that of Philip Stubbs, the Elizabethan Puritan in excelsis, to the Theatre; & of Cromwell for same reason closing down all the playhouses under his Commonwealth.

~Michael~