Urg. I don't care for Gaga. Or a lot of the other stuff that is out there. The music I can deal with...it's the lyrics that I can't stand. I'm assuming that that is why the other posters suggested KidzBop. She probably would like that.
Our kids tend to listen to the same kind of stuff that my husband does (he's really an aficionado with a wide eclectic range of tastes from country, to soul, to bluegrass, to grunge to whatever... a HUGE U2 fan, but also stuff like Blue Rodeo, Snow Patrol, and on and on of folks you probably thought were dead or have never heard of). Anyway, our kids like the stuff he plays and we always play what he likes and never "kids" music which he can't stand. So our kids LIKE when we play Corb Lund, or BellX1, or Brad Paisley, Brian Setzer, Ryan Adams, Chris Isaak, Chris Thile, Colin Hay, Crowded House, Wilco, Dierks Bentley, Keith Urban, Lyle Lovett, The Finn Brothers, Great Big Sea, James Hunter, Jim Lauderdale, Keane, Lenny Kravitz, Liam Finn, Mark Knopfler, Muse, Punch Brothers, Nickel Creek, Pearl Jam, and especially the Police. Our kids always joke with us when an old Police song comes on the radio ("Everybody, be cool, it's the po po!") LOL
Sorry.... I know this isn't much help. My son is 13 and he likes some old music (Elvis, Harry Connick Jr., etc) and the stuff hubby likes now. Our daughter is 10 and she did enjoy some of the more "kiddie" music when she was much younger, but she is past it now.
Do you think that she would like Laurie Berkner? We all could listen to her (except hubby, lol). Those are great! I think one of my all time favorites was Victor Vito.
Victor vito and freddie vasco
Ate a burrito with tabasco
They put it on their rice
They put it on their beans
On their rutabagas
And on their collard greens
This link is for a more recent CD. It doesn't have Victor Vito on it though. :(
http://www.cduniverse.com/productinfo.asp?pid=8334004