Legends Gold and Disco Series were just a rebranding of some of the Legends Main series discs, they didn't even bother changing the track orders:
Legends Disco Karaoke Series
LGDP-1 = LG056
LGDP-2 = LG075
LGDP-3 = LG093
LGDP-4 = LG150
LGDP-5 = LG153
Legends Gold Karaoke Series
LGGLD002 = LG029
LGGLD003 = LG104
LGGLD004 = LG137
LGGLD005 = LG113
LGGLD007 = LG090
LGGLD008 = LG080
LGGLD010 = LG043
LGGLD011 = LG086
LGGLD012 = LG009
LGGLD013 = LG089
LGGLD014 = LG066
LGGLD015 = LG050
LGGLD017 = LG125
LGGLD018 = LG105
LGGLD021 = LG010
LGGLD022 = LG069
LGGLD025 = LG121
LGGLD026 = LG115
LGGLD027 = LG014
LGGLD028 = LG114
Legends were not the only company to milk KJ's in this way, Music Maestro did the same with the Velvet Elvis collections!
DW, you might also want to check your local collection with my LEGENDS share, to see if it is worth the dupe.. We have already had confusions over the JTG and Pocket Songs sets!!!