DualDisc
DualDisc was a type of double-sided optical disc product developed by a group of record companies including MJJ Productions Inc . , EMI Music , Universal Music Group , Sony BMG Music Entertainment , Warner Music Group , and 5 . 1 Entertainment Group and later under the aegis of the Recording Industry Association of America ( RIAA ) . 
<triplet> MJJ Productions Inc. <subj> Universal Music Group <obj> record label <subj> Sony BMG Music Entertainment <obj> record label