Cass
You can do the BK7M backing AND Hammond thing on the BK9. Got mine hooked up to my PK5 Bass Pedals and just do organ with drums backing sometimes for fun. Sold my VR700 as the BK9 Hammond Sim is just as good.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer