Mariah Carey. She's never released a good album. Like the user Work Bitch said, there is nothing innovative about her music. Most of her discography is full of trite songs.
Mariah. She's been releasing the same boring r&b ballad for 25 years.
Beyonce. Her singles are good. Most of them. & she has some gems but for the most part, she has a few good songs on analbum and the filler.
