Complete the crossword

12345678
Across
  1. 4. not happy, sad
  2. 6. written and played in a traditional style
  3. 7. somebody who sings songs
  4. 8. without much noise
Down
  1. 1. not difficult
  2. 2. aggressive, not calm
  3. 3. not careful
  4. 5. somebody who always tells the truth