From James Bastien's Older Beginner Organ Course, Level 1
I used the Hammond XPK-130G, connected via MIDI, to play the "B3 Bass" sound on my Nord for the bass notes. I'd read that Ernst Zacharias, the inventor of the Pianet, had built a "monophonic pedal-tone generator which was designed as a bass accompaniment for a piano," so I felt that using bass pedals with the Hohner Pianet sound had some authenticity, but later I learned that Hohner actually did make a stand-alone bass pedal unit. I'll have a more detailed post about this on Sunday.