2. Celine dion (but she doesn't really release music anymore)
3. Lady antebellum
4. Carrie underwood
5. Taylor swift (for songwriting not really singing)
6. Sara Barellis (probably misspelled her last name)
7. Maroon 5
9. Kelly clarkson
10. Gavin degraw
I would say that's in order of preferences as well.
Celine is supposed to be delivering new french and english albums this year ... the English one was supposed to come in April but has been pushed back, it sounds like it wont be an album of all new material and is reported to have a working title of "Classics" with songs from her new Vegas show compiling alot of the album tracklist reportedly ( expected to be laregly a covers album)...
There are conflicting reports that she has been recording since March until this June (when she is due to restart dates in Vegas) , but some say she is still recovering from vocal problems she suffered towards the end of the last dates in Vegas- when she was forced to cancel some shows
But it looks good for some new music this year too
I really do hope that we get some new stuff from Celine