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[lava]

Lately I've been sequencing four timbres independently/simultaneously within a patch on my Radias. But now I want to change one of the four timbres via the sequencer and leave the others unaffected.

Is there a MIDI CC (I checked the manual, didn't see it) that I can send to the Radias to change a single timbre, or will I have to duplicate the entire patch into another slot, change the one timbre, and then use the sequencer to change from one patch to the other?

[OpAmp]

Hi,

Yep, there is ... something. Refer to p147 of the manual, switching timbres, in the MIDI chapter.
Roughly outlined it works like this:
* start with a program with 4 timbres, each having their own midi channel number set up
* send then a combination of bank select MSB (CC#00), bank select LSB (CC#32) and a program change message

-> the used MIDI channel number for the 3 messages indicates the timbre that will be swapped out
-> bank select and program change message select the timbre (1 -> 4) of a certain program that will be swapped in in the selected timbre.

So, it is not a single CC message, but in fact 3 messages. Don't expect it to be seemless from sound perspective.

Have fun!
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[lava]

Thanks Opamp, I knew you'd be the one to respond.