My theory is that Mariah Carey can sing anything. You hear that expression, 'She can sing the phone book'. If you can really sing, you should be able to sing anything. That's [what] the whole competition [is about].

Sorry, but when you sing songs that the great Mariah Carey sings, you run the hugest risk of being compared to icons. And right now, there's no one hotter than…

Mariah Carey has also covered it... and about bloody time! It took 21 years for someone to do a proper cover of one of our songs.

I love her, she's such a nice person! I had an opportunity to meet her for the first time at the Z100 concert. Randy [Jackson] was like 'Mariah's here, would y…