Mosaic traditionally has had a hard time getting material from BMG... Cuscuna once said, "It's hard to get anybody there to call us back" (in reference to why there hadn't been an Arista Braxton set yet). From what I hear they torpedoed the originally-planned Tristano set, and outside of the Jacquet material (which came out 8 years ago), I don't think Mosaic has put out anything for a long time that was leased from BMG. I could be overlooking something, but it just seems as if BMG doesn't much like leasing to them. Maybe the merger with Sony will change that, since Sony leases quite often to Mosaic. Hope it's not the other way around.
But a Shorty Rogers RCA set would be sweet indeed. I just got my hands on a copy of THE SWINGIN' NUTCRACKER, at last, at last...