Re: Pippin & Motown. IIRC, Motown was a major, if not the major, investor in the show, hence the cast album on that label. Also remember they shopped the score to their biggest stars--Jacksons doing "Corner of the Sky" and the Supremes having one of their only post-Diana hits (very minor at that) with "I Guess I'll Miss the Man." Shades of the golden era, when you could expect a multitude of Columbia artists to record songs from the last OBC on that label.
Yes, Vivian not only accompanied me to the show, she did a fab dual job as Zorba and Hortense (not to mention a cameo as the crow in the second act).