I need help thinking of artists to put on my new ipod?

I just got an Ipod touch and I want to download some new music but im having a brain fart and cant think of a lot of artist i like at the moment. any ideas? some of my favorite artists are THE FORMAT,LUCERO,THE SPILL CANVAS,THE ROCKET SUMMER,RON POPE,A FINE FRENZY,THE POSTAL SERVICE,MUSE,MAYDAY PARADE, CARTEL,RASCAL FLATTS,TAYLOR SWIFT, DIXIE CHICKS....so music that fits sounds like them is what I'm going for! thanks