Combo regularly playing violin in limbo (8)
I believe the answer is:
oblivion
'limbo' is the definition.
(I've seen this before)
'combo regularly playing violin' is the wordplay.
'regularly' means one should take alternating letters (regularly take one letter, leave next etc.).
'playing' indicates an anagram.
The alternating letters of 'combo' are 'ob'.
'violin' is an anagram of 'livion'.
'ob'+'livion'='OBLIVION'
'in' acts as a link.
(Other definitions for oblivion that I've seen before include "Total forgetfulness -- limbo" , "lack of fame" , "Unconsciousness - nothingness" , "State of being forgotten or unconscious" , "Neglected state" .)