I've to say I didn't have exactly the wish to buy this Riri's new album, not because I didn't like her voice, but since I wasn't crazy about her previous album & also because I wasn't thrilled of some of these new singles (particularly What's my name...), but it was cheap & I loved Love the way you lie (Part II with Eminem, the 1st version of the song was included in the last rapper's album instead, not in her Rated R by the way), so finally I've got it.
As other reviewers said, I've had the same nice impression: her voice has improved for this new effort, you can have a real sense of it in the way she sings some songs (like for ex with the beautiful ballad California king bed): in the end I've fairly enjoyed this whole album, even if the songs are overall ok but not great for my taste, or super original as to say (apart some more powerful disco hits like S&M, Only girl in the world, & the ones already previously quoted).
If you don't like rap & raggae beware, because there's an hint of this & that again here, along with pop: & I knew that being Rihanna from the Barbados, she liked raggae vibe & Bob Marley, but it was since the beginning of her career that she didn't reprise this rhythm, she decided to do it now, giving a more summer vibe to this more cheerful cd compared to old Rated R, it's like a mix between A girl in the sun oldest album with Good girl gone bad's 1, to give you a better general idea...
PS_funny last note: when I've heard the Cheers' track, for a moment I was very perplexed by the chorus, because it sounded "so not her", & reminded me of someone else...Avril Lavigne?! LOL that was weird, but of course on purpose, a typical party good feeling song, you know!