Voice of a Liberal in loud row (8)
I believe the answer is:
falsetto
'voice' is the definition.
(I know that falsetto is a vocal technique)
'a liberal in loud row' is the wordplay.
'liberal' becomes 'l' (abbreviation).
'in' indicates putting letters inside.
'loud' becomes 'f' (short for forte - 'loud' in music).
'row' becomes 'setto' (I've seen this in another clue).
'a'+'l'='al'
'f'+'setto'='fsetto'
'al' put into 'fsetto' is 'FALSETTO'.
'of' is the link.
(Other definitions for falsetto that I've seen before include "Abnormally high voice" , "Note production" , "Unnatural voice" , "High singing method" , "Way of singing at higher pitch" .)