Opposed to every second song, cover, CD, note, vocal by The Cult (6)
I believe the answer is:
voodoo
'cult' is the definition.
(I have seen 'Caribbean cult ' mean 'voodoo' so perhaps 'cult' could also mean 'voodoo')
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for voodoo that I've seen before include "System of witchcraft" , "W. Indian witchcraft" , "Caribbean religious cult" , "Jinx" , "Religious cult practised in Haiti, involves witchcraft" .)