Virtuoso

The Voyager comes across a civilization that is much more technologically advanced than the Federation but somehow has no conception of music. By accident, they hear the Doctor humming an opera and take a real shine to his singing. They invite him to perform on their planet and he becomes a celebrity opera star! He gets all the adulation that he could possibly have craved in his life, to the point that he considers leaving Voyager and settling on the planet. Surely not!