Your correct Rikki. I was thinking of EMC's style conversion for converting 5000 to 3000. I don't believe EMC includes any keyboard above the 5000, although I heard from Neil Blake that "Their working on it", which means including 6 and 7000.
Anyway the Americana Disks that play on my 3000 are quite good..in fact real good !
Larry "Hawk" Hawk Music
♫ 🎹🎹 ♫ SX-900