This is a single CD issued by TCM Turner Classic Movies Music/Rhino Movie Music (R2 72907) in 1997.
Stewart is involved only on track 12, Easy to Love (Alternate Version). In the film, Born to Dance, he appears to be singing the song with Eleanor Powell when, in fact, her vocals were dubbed by Marjorie Lane, who gets credit on the CD. A photo of Powell and Stewart does appear in the booklet accompanying the CD:
Here is the CD version of Easy to Love:
