Take whatever musical comedy you recall and be ready to suspend disbelief when you go, as you should, to see “My Life Is a Musical,” which had its world premiere at the Bay Street Theater on Saturday night.
Adam Overett, who wrote the music, lyrics, and book, knows what’s been on stage and in film in the last few decades, and he draws upon that familiarity in a two-act tour de force, which is both satiric and sentimental with a bit of pop psychology, romance, and Marx Brothers mayhem. They’re ingredients for success.