pop music and artists

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Across
  1. 4. Who has the most Grammy awards?
  2. 5. Who is dating NFL player?
  3. 7. What is Darth Vader's theme song?
  4. 8. What instrument does Squidward play?
Down
  1. 1. "Billie jean is not my _____"
  2. 2. what the song that lady Gaga and Bruno Mars?
  3. 3. Who sing she knows?
  4. 6. What is the most popular song in the world?