warning - complete newbie here on MIDI as well as on Reaper...
I am using a new Yamaha MX88 that has a rhythm pattern player & tempo button; 16 channels of MIDI with channel 10 reserved for the rhythms (as is typical I guess).
When I run the keyboard through a MIDI track on Reaper with record monitoring "off," and then record (or monitor) the audio from the keyboard on a separate track, the rhythm button works fine.
But if I have record monitoring "on" on the MIDI track then it interferes with the rhythm feature of the keyboard - it doesn't play at all, and if I click the tempo button, rather than showing tempo as usual, it simply shows the message "EXT" (which I am guessing is short for "external" - some kind of external control).
This wouldn't be an issue, except that one of the FX plugins I have been using - Alt-Tuner (
http://www.tallkite.com/alt-tuner.html) depends on record monitoring being set to "on" in Reaper. So when I use alt-tuner I can't use the rhythms on the keyboard, and vice-versa.
I am guessing that I may have to ask this question over at Yamaha - but it would be great to know what kinds of MIDI messages (or whatever it is) are sent by the "record monitoring" feature in Reaper... or is it a clock issue??? I have no idea what I am talking about anyway.
Other details of my setup:
right now I am running the MX88 through a Focusrite Scarlett 18i8 audio interface (Midi I/O <==> as well as audio out MX88 ==> Focusrite), connected via USB to a laptop running Windows 10.
This issue was present before I got the audio interface, and was running the MX88 direct to the computer through its own USB port.
Also - I know that losing the ability to play the very basic out-of-the box rhythm patterns from the Yamaha isn't a great loss, if I were to seriously engage in music production. But right now I am getting my feet wet and doing it for fun and on the side of my real musical ventures, and I am trying to learn and figure out all of this stuff step by step, and haven't yet gotten to figuring out MIDI percussion instruments, using samples in Reaper, and all that good stuff...
plus I would like to understand how all this is working, and why something seemingly unrelated like Record Monitoring should interfere with a percussion MIDI feature.