Musical intruments and jobs

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Across
  1. 2. instrument used in rock that uses 4 strings
  2. 6. It's like the piano but electric
  3. 8. invent things
  4. 9. It is used by singers that increases the sound
Down
  1. 1. string instrument is used for classical music, it is played with a bow
  2. 2. counts a lot
  3. 3. compose songs
  4. 4. instrument made of wood with six strings
  5. 5. write book and stories
  6. 7. percussion instrument that uses drumsticks