Radical classical sextet ignored by a record collector (9)
I believe the answer is:
anarchist
'radical' is the definition.
(I know that anarchist is a type of radical)
'sextet ignored by a record collector' is the wordplay.
'sextet' becomes 'VI' (synonyms).
'ignored by' is a deletion indicator.
'a' becomes 'an'.
'record collector' becomes 'archivist' (I've seen this before).
'an'+'archivist'='anarchivist'
'anarchivist' with 'vi' taken out is 'ANARCHIST'.
'classical' is the link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for anarchist that I've seen before include "bolshevik" , "One favours the abolition of governments" , "disorderly person" , "Opposer of all governments" , "Who may have wanted to destroy" .)