Mariah Carey sits on the list of artists that don't have to work too hard to impress. While the R&B diva's latest release, E=MC2, is not an album based on the mass-energy equivalence, it does follow a formula that seems to work for the singer. Carey, commonly labeled as one of the world's best vocalist, hits all the right notes, teams up with Jermaine Dupri, who supplies her with simple, but pefect hip-hop, bassy beats, and there you have it: a sure-fire hit album.

The singer gets even more formulaic and kicks off the album with a collaboration with T-Pain, who's been on almost every radio hit released in the past two years, and a signature high note. But Carey knows her fans, and her fans love her sexy cooing, dramatic ballads and catchy, sing-alongs -- a la 'Touch My Body' -- so in the end E=MC2 equals classic Mariah Carey.