Instruct: Classify the given review into positive or negative sentiment.
Query: Her worst album by far.

Rainbow has to be worst album by Mariah Carey. I was such a fan of her earlier work, things started to go downhill for her when she released Butterfly. Her beautiful voice began to wither out, it became too breathy, had no substance left. She released too many albums back to back and I think it took a toll on her voice. Rainbow is a horrible record, her songwriting was not original anymore, ever since she divorced Tommy Mottola, her career suffered, she was looked at as a divorced woman gone wild instead of a multi-talented artist with something more to offer. Her music has never been the same since then, I prefer her pop side rather than the R and B side. The only good song on Rainbow is Petals. So raw and heartbreaking, she is at her best when she is reflecting on personal issues. If you want a great Mariah album, consider Music Box, Daydream, or even her Christmas album, they show the power in her voice.