Singers of these lyrics

12345678910
Across
  1. 2. What does the fox say
  2. 3. Cause you make me feel like, I've been locked out of heaven
  3. 6. Let them know that we're still rock and roll
  4. 8. Baby, baby bay oh
  5. 9. We are never ever ever getting back together
  6. 10. You're gonna hear me roar
Down
  1. 1. I live for the applause
  2. 4. Live while we're young
  3. 5. I came in like a wrecking ball
  4. 7. This girl is on fire