MCC, Thirty Five Years Strong

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Across
  1. 4. Seniors son
  2. 5. Accompanist celebrating 10 years with MCC
  3. 6. Organized group of singers
  4. 11. Synonym for hair
  5. 12. Rehearsal space
  6. 15. Mob patriarch
  7. 16. Number of years four choristers have been with MCC
  8. 18. Board president
  9. 19. Preparatory learning
  10. 20. Belonging to Arthur
Down
  1. 1. Head chorister for CC
  2. 2. Musical event
  3. 3. Italian high
  4. 7. Outgoing mayor
  5. 8. Home of MCC
  6. 9. Number of five years rings this year
  7. 10. Sufficient income
  8. 11. half or moderately
  9. 13. Primary number
  10. 14. Middle
  11. 17. Number divisible by ten