Aeolian-Hammond BA
The Aeolian-Hammond BA Player Organ was the result of a joint venture between Aeolian and Hammond, combining Hammond's B organs with the automatic/mechanical playability of Aeolian's paper roll systems. The organ seems to play decently, but we have not tested all of its manual functions and have not tested its automatic functions.
This is the only Hammond tonewheel organ we know of in which you can easily install a MIDI system that will allow you to play it with digitally-programmed music. If you want to MIDI-fy your Hammond, this is the one to do it with.