Across
- 1. Song for a math student (11)
- 4. Coleridge narrator (7)
- 5. Bone missing in babies (7)
- 6. ____ of Sandwich (4)
- 8. Atomic-age diplomat, or type of cocktail? (7)
- 11. Leech, or Oscar-winning film? (4)
- 15. Song for a crossword-solver (11)
- 16. Song for a badly-trained musician (9)
- 17. Timid (3)
- 18. French greeting (5)
- 19. Killer whale (4)
- 21. Lie nobler (anagram) (9)
Down
- 2. Caregiver, or pandemic hero? (5)
- 3. "My pleasure" (6)
- 5. Joe Biden's occupation (10)
- 7. Senior clergyman (6)
- 9. Song for a professor (11)
- 10. Freud's conscience (8)
- 12. Unaccompanied (5)
- 13. What is to an MD, that osteopathy is to a DO (9)
- 14. Admit (to), with "up" (4)
- 20. Type of wave with very long wavelengths (5)