Name that tune!

[Crystal72]

I made a forum game, YAY! So, the title kind of explains it all, just post a clipping of a song, then the next poster names it, and then they give a clipping of a different song.
Me first-(It's easy, derp)
"Like a diamond in the sky..."
Name that tune!

[mossstar1992]

Diamond by Rheanna {SP?}
"Step on the brakes and ima step on the gas, i am a rebel but i do it with class."