Classical composer — namely Parry, perhaps? (8)
I believe the answer is:
schubert
'classical composer' is the definition.
(composer Franz Schubert)
'namely parry perhaps?' is the wordplay.
'namely' becomes 'sc' (short for Latin scilicet- 'it follows' or 'namely').
'parry perhaps?' becomes 'hubert' (composer Hubert Parry).
'sc'+'hubert'='SCHUBERT'
(Other definitions for schubert that I've seen before include "Austrian composer and prolific songwriter" , "Lieder composer" , "barman" , "Austrian composer, d. 1828" , "Austrian composer of the Trout piano quintet" .)