Oddly, soul rap albums provide something extra (7)
I believe the answer is:
surplus
'something extra' is the definition.
(thesaurus)
'oddly soul rap albums' is the wordplay.
'oddly' indicates alternate letters (letters in the odd-numbered positions are used).
'soul'+'rap'+'albums'='soulrapalbums'
The alternate letters of 'soulrapalbums' are 'SURPLUS'.
'provide' is the link.
(Other definitions for surplus that I've seen before include "balance" , "Superabundance" , "Redundant" , "(An) oversupply" , "Surfeit" .)