BBC News
By Mark Savage
image copyrightGetty Images
image captionBMG owns the rights to recordings by Nina Simone and John Lee Hooker - although there is presently no suggestion they were forced into unfair contracts
The record label and publisher BMG has uncovered evidence that some black artists were paid less than their white counterparts.
The company launched a review of its catalogue in June, vowing to address "inequities or anomalies" in 30 days.
The inquiry took significantly longer, but presented its findings on Friday.
It said four of the 33 labels BMG had acquired since forming in 2008 showed "significant differences" in the royalty rates given to black artists.