Someone on Facebook put up the info on how to have Unrealbook and SongbookPlus on the Ipad select registrations on a Roland BK instrument when you select a song. I've been trying to find this out forever. He said he will be making a Youtube video of it so I will share when that is ready.
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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