I swear that's an uncredited Leonard Nimoy doing the hedge clipping in front for the hospital, but the Internet has zero corroboration. But it looks like him (disguised) and even sounds like him.
Yes? No,?
from the box set booklet notes - In support of Georghe's comments above that the two "Wedding March" bonus CD tracks added to Cumbia.... are unlikely to be Mingus on piano but most likely Jimmy Rowles. Probably the reason these two tracks were excluded from the box set
Section titles from "Three Or Four Shades Of Blues" are described by Charles Mingus in the original liner notes and are followed here by new annotations by the author.
4. Bob Neloms temp solo, Caucasian Folk Blues, Jimmy Rowles piano
After Neloms' piano solo, Rowles steps into a quote from Mendelssohn's "Wedding March" and segues into a melody resembling the 18th-century folk song "Believe Me, If All Those Endearing Young Charms," which became popular in 1801 with new lyrics written by the Irish poet Thomas Moore. It seems Mingus meant these two pieces to represent "Caucasian Folk Blues."
Regarding the takes of Big Alice & The Call, both versions on the CD box set are take #1 whereas the bonus versions on the "Three or Four Shades...." CD releases are take #4 ("Big Alice") & take #2 ("The Call"). So, if you have the CD box & the standalone CD of TOFSOTB, you are only missing two takes of "Big Alice".