Needing no introduction, procession covering Chopin's first passage (6)
I believe the answer is:
arcade
'passage' is the definition.
(arcade is a kind of passage)
'needing no introduction procession covering chopin's first' is the wordplay.
'needing no introduction' means to remove the first letter.
'procession' becomes 'parade' (parade is a kind of procession).
'covering' indicates putting letters inside.
'first' suggests taking the first letters.
The initial letter of 'chopins' is 'c'.
'parade' with its first letter taken off is 'arade'.
'arade' enclosing 'c' is 'ARCADE'.
(Other definitions for arcade that I've seen before include "Shopping mall" , "Lots of games" , "covered avenue of shops" , "Here one may find shops" , "Covered walk with shops" .)