What's Going On - Isolated Vocal and Bass

[justanothermotownfan]

Hi all, I'm hoping to get some help here. Some time ago a version of What's Going On was released with Marvin singing over Jameson's bass, similar to a version of You're My Everything by The Temptations on the SITSOM soundtrack. I know I have it; I just can't find it anywhere. Can anyone tell me what CD the WGO was issued on? I would appreciate the help.

Thanks in advance.

[motown_marc]