Closet Band
A musical artist or band that a person only listens to in the closet just to avoid the ridicule & laughter from the other 99% of people in the world who hate their music or image.
"Cornelius pretends to like Nine Inch Nails because he wants to mingle with my friends, but Peyton Parrish is his favorite Closet Band. He goes home and flails his arms to his music while dancing to him and everything!"