Fairly sure it's Mr. Aebersold. The track I heard had his count-off sampled, and it would enter in, stop-time, like some sort of backbeat rap track.
If memory serves, Rufus Reid was on bass, Dan Haerle on piano, and Adam Nussbaum on drums. Or, at least those guys are on some of the Aebersold play-along's.
Jamey came to North Texas in 1989 when I was there. He was a great guy, and played the hell out of the alto. More impressive than I had expected.
Some of the Aebersold play-along tracks can be found on various compilations, like this one ...
Which tracks on that Groove Merchant compilation are Aebersold? I downloaded it (along with tons of other Ubiquity compilations) from emusic in '03. Funky stuff.