Related Clues:
- Bonnie & Clyde, for one
- Company of performers
- See 43-Across
- Donizetti's 'Tornami a dir che m'ami,' e.g.
- Collaborative work
- Trio minus one
- Small group
- Simon and Garfunkel, once
- Batman and Robin are a dynamic one
- Deuce
- Song for two
- Tune for two
- Two of a kind
- It may call for four hands
- Irving Berlin's 'You're Just in Love,' e.g.