Uplifting pop records? Absolute babble (8)
I believe the answer is:
splutter
'babble' is the definition.
(both can mean to talk rapidly or incoherently)
'uplifting pop records? absolute' is the wordplay.
'uplifting' shows that the letters should be reversed in order.
'pop records?' becomes 'LPs' (long-play records).
'absolute' becomes 'utter' (similar in meaning).
'lps' backwards is 'spl'.
'spl'+'utter'='SPLUTTER'
(Other definitions for splutter that I've seen before include "Talk with angry incoherence" , "Make spitting sounds when speaking (in a rage?)" , "Speak with a spitting sound" , "Throw out droplets or sparks" , "Scatter liquid" .)