I have the Onyx record and then that Stash CD of Bird with McShann and don't at all recall any tenor sounding like Lester the way this one does. It jumped out at me actually, like, wow, how is THIS happening?
The logistics...the tenor solo comes after a piano break, so there would be time to switch there. But after that solo, then I think there's alto in the ensemble. But maybe just one?
Also, listening to the sax riffing before that, does that sound like there's an alto in the mix? Maybe not?
It's not as reflexively simple as if it's tenor it's not Bird....