Birthday Crossword

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Across
  1. 1. Mental matrix marathon
  2. 3. Birthday cake
  3. 6. Ilish
  4. 8. 'Talent' makes us groan
  5. 9. Choral compendium
Down
  1. 2. Midnight chef
  2. 4. Go-to accompaniment
  3. 5. Routine palindrome
  4. 7. Psychohistory pioneer
  5. 10. Nap-zone