Happy Birthday!

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Across
  1. 3. we can dance to this
  2. 4. banjo's cousin
  3. 5. army rank
  4. 8. period of teaching
  5. 10. non-electric guitar
  6. 11. one under a baker's dozen
  7. 12. fourth of five of the working week
Down
  1. 1. "______ Sue" by Buddy Holly
  2. 2. make better in quality
  3. 5. in this exact moment
  4. 6. musical performance
  5. 7. newest online medium
  6. 9. favorite pursuit; e.g. sewing or gardening