Some 1 man bands insist on playing louder as if they’re trying to make up for not having more people in the band. Make sure the music is played at a decent level and you’re good.
If you let the music get too loud, it really doesn’t matter whether you hired a band at all or simply played a tape of someone throwing elephants in jars down Niagara Falls. After a little while people lose their hearing, so they can’t hear it anyway.