Janet Jackson
When it comes to Janet Jackson, saying that her vocal abilities aren’t as impressive as the rest of her performing abilities isn’t really an insult. She does have a good voice, but the rest of her abilities are so much more impressive that they outshine her actual singing.
Jon Bon Jovi
Jon Bon Jovi was totally unstoppable during the 1980’s and 90’s, but then he began smoking cigarettes, and things took a turn, directly impacting his vocal abilities. Along with his years of powerful singing, the smoking made his vocal abilities decline.