What is your favorite song by...?

Oh my goodness!!! Where do I begin? I really like Britney Spears, Christina Aguilera, and Kelly Clarkson. Katy Perry and Lady Gaga are so-so. I love all of Britney Spears songs but my all time favorite have to be Piece of Me, Toxic, Womanizer, Stronger, and Circus. And Christina Aguilera is an amazing singer. My favorite are Not Myself Tonight, Hurt, and Beautiful. I only really like one by Katy Perry and that is Hot & Cold. By Lady Gaga, I would probably have to say Just Dance. And By Kelly Clarkson, I really like Because of You, Already Gone, Since You've Been Gone, All I Ever Wanted, Don't You Want To Stay with Jason Aldean, and Breakaway!