Incident is occurring in recording poem (7)
I believe the answer is:
episode
'incident' is the definition.
(I've seen this before)
'occurring in recording poem' is the wordplay.
'occurring' becomes 'is' (I can't explain this - if you can you should believe this answer much more).
'in' is an insertion indicator.
'recording' becomes 'EP' (extended play vinyl record).
'poem' becomes 'ode' (ode is a type of poem).
'ep'+'ode'='epode'
'is' going within 'epode' is 'EPISODE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for episode that I've seen before include "Instalment of a TV series" , "Set of incidents" , "Instalment; event" , "Instalment; incident" , "Incident in a story or part of a serial" .)