In which two performers are expected to tango? (4)
I believe the answer is:
duet
'in which two performers' is the definition.
The definition and answer can be both quantities as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'expected to tango?' is the wordplay.
'expected' becomes 'due' (similar in meaning).
'to tango?' becomes 'T' (phonetic alphabet: alpha, bravo, charlie etc.).
'due'+'t'='DUET'
'are' acts as a link.
Can you help me to learn more?
(Other definitions for duet that I've seen before include "Musical piece for two performers" , "Music for two" , "Performance by company, perhaps" , "Piece for brace" , "Performance by two" .)