So from a quick reading of the discography only 3 of these have been previously release as CDs? And is this David Weiss the trumpeter who's the producer?   

👍

Thigpen's drums and Brown's bass are really nice and clear on the samples.  Looking forward to this.   Curious that they are only putting out 2500 of these.  I guess they don't see much of a market?

Yes, I have that.

Well, if Mosaic does not include or at least mention that track in its box it is quite likely there is no such thing (on its own) as an "Abyssinia" tune.  So what was that tune? You got me curious, so I'd like to know too.