Who Sings this Song?

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Across
  1. 2. Anit-Hero
  2. 5. Last Night
  3. 8. Escapism
  4. 9. Cupid
  5. 10. Unholy
  6. 11. Flowers
  7. 13. Shivers
  8. 15. Boy's a Liar Pt. 2
Down
  1. 1. Something in the Orange
  2. 3. Calm Down
  3. 4. As It Was
  4. 6. Area Codes
  5. 7. Until I Found You
  6. 12. Peaches
  7. 14. Kill Bill