Record one's poems in instalments (8)
I believe the answer is:
episodes
'instalments' is the definition.
('episode' can be a synonym of 'instalment')
'record one's poems' is the wordplay.
'record' becomes 'ep' (abbreviation for extended play record).
'one's' becomes 'I's' (Roman numeral).
'poems' becomes 'odes' (ode is a kind of poem).
'ep'+'is'+'odes'='EPISODES'
'in' acts as a link.
(Other definitions for episodes that I've seen before include "Occurrences in a series" , "Sections of a serial" , "So espied in parts of stories" , "Incidents or events as in a story" , "Instalments" .)