Interrupt metal duet? (3,2)
I believe the answer is:
cut in
'interrupt metal duet?' is the definition.
'cut in' can be an answer for 'interrupt' (cutting in is a kind of interrupting). I'm not sure about the 'metal duet?' bit.
'interrupt metal' is the wordplay.
'interrupt' becomes 'cut' (cutting is a kind of interrupting).
'metal' becomes 'In' (In is an example).
'cut'+'in'='CUT-IN'
Can you help me to learn more?
(Other definitions for cut in that I've seen before include "join traffic dangerously" , "Interrupt; veer across another vehicle and take its space" , "Intercept" , "film clip added later" , "Interrupt someone speaking" .)