SINGERS THAT START WITH THE LETTER K

Inspired by the "Foods that start with the letter Q" Jeopardy scene in White Men Can't Jump
  1. What is a Kesha?
  2. What is a Kelis?
  3. What is a Kiesza?
  4. What is a Kaiser Chief?
  5. What is a Karmin?
  6. What is a King of Leon?