If you have USB connected to your MODX and a 5-pin DIN connected between the MODX and YC-61 then you would record what the YC-61 keys are pressing using MIDI IN (input to the DAW, output from the keyboard) on Port 3.  For recording what keys MODX is pressing, you'd record MIDI IN on Port 1.  To send the keys from the YC-61 to MODX you'd MIDI route from Port 3 (in) -> Port 1 (out).  To send the keys from MODX to the YC-61 you'd route Port 1 (in) -> Port 3 (out).

I'm not sure how you've decided to connect USB and MIDI cables to realize this hardware connectivity.  I've laid out one way - the way I'd do it.  But it's not necessarily the only way.

For recording Audio - I'd connect the outputs of the YC to the MODX A/D Inputs and this keeps the MODX as the master controller with all audio and MIDI going through it to "reach" the YC.  YC's audio would be recorded using the A/D inputs and routing them (on MODX) to a MODX USB output channel.   And MODX's audio itself can use the Main L&R USB channel.  Again, not the only way to do it - but a way that keeps the MODX as the single audio interface.

Sorry, I didn't follow the first part (don't worry I normally don't use the MODX USB), but the second part I think that is clever.

Really what I needed to verify is that the YC-61 can send and receive on separate MIDI channels, but only on one of each. So in the case where the YC is making the dual manual organ sounds (similar to a Hammond B3 without the pedal sound generator) the one manual sound has to be played 'manually' (sorry;^}) while the other manual sound can be played over MIDI.

There might be a way to route MIDI channels using the USB on the MODX and switching the capability to use MIDI jacks like an external MIDI interface, (again this is a very clever capability that current OS for Yamaha keyboards provides) but let me describe my setup more.

I use a CME H4 MIDI interface in my outboard rack, and I have many things connected together. On my YC-61, in order to use a 'half moon switch' accessory that I built (to control the rotary speaker), it is connected to the MIDI input jack on the YC-61. The USB 'to Host' jack on the YC-61 is connected to the H4 USB A input through a USB hub. It appears within the H4 as the two ports, I use port 1. The MODX USB 'to Host' is not used but given that it can do so many wonderful things, it is available when I need those capabilities. The MODX MIDI input and outputs are connected to a WIDI Jack device, and that sends and receives Bluetooth from the H4, and the H4 routes all the MIDI to and from everything, including from the many things I use to the USB C connector which I can connect to my laptop running Cubase when I wish to record MIDI tracks (not very often). Within the laptop the H4 then appears as 4 MIDI ports: one for a Yamaha editor, one for a Roland editor, and one for recording MIDI in Cubase. Typically I record audio into Cubase using a UR 22 connected to my DME24N digital mixer.

I have never used the dual manual YC-61 capability, but just planning ahead as I make up MIDI channel assignments for my setup.

One thing I have not considered is how the MIDI input on the YC-61 is going to use the rotary speaker control messages in the case where I use the dual manual capability. Do the two manuals in that case get routed through a single rotary speaker effect? Finally do these rotary speaker control messages, in addition to controlling the rotary speaker, get sent from the MIDI input jack out the USB MIDI port 1?

Setting aside the possibilities by using the MODX USB 'to Host' jack for a minute, I think the part I didn't follow

Posted by: Jason

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USB connected to your MODX

you meant with the USB connected to the Laptop for use in Cubase perhaps, and the part

Posted by: Jason

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a 5-pin DIN connected between the MODX and YC-61

you meant a pair of MIDI cables going to/from YC-61 and the MODX. Then the MODX USB serves many purposes, but I have so many other things I use it gets difficult to incorporate all of that. Anyway, maybe a picture would help.

The suggestion for "USB connected to MODX" is a USB 2.0 type A to type B cable also sometimes called a "printer cable" with the type B end plugged into MODX's USB TO HOST port and the type B plugged into your laptop.  This USB connection would carry all audio from both MODX and anything plugged into the A/D inputs as well as the MIDI from MODX itself (Port 3 MIDI IN) as well as from any devices plugged into the 5-pin DIN (Port 3 MIDI IN) as well as allowing for communicating to MODX itself (Port 1 MIDI OUT) and the 5-pin DIN connected MIDI devices (Port 3 MIDI OUT).

The diagram is helpful to internalize all of your other routing dependencies.  On my mobile device I can't really look at the diagram as I type this so I'll wait until later to digest that information.   I still believe the approach I'm suggesting works in conjunction with the other gear although I'd have to look up some details of how the H4 works.  

But rather than steer you away from using the mixer as the audio interface (as I previously suggested not knowing your current setup) I'll have to stew on this when I can better organize my thoughts and take a second swing trying to minimize changes versus your setup.  

Ultimately, it still may be useful to have MODX take over the audio interface duties and then audio route the mixer's audio output into MODX and connect the YC audio into the mixer instead of my previous suggestion to connect YC's audio into MODX.  However, I still need to look at this on the "big screen".  Stay tuned and I'm sure others may chime in too.

... just putting your image inline to help visibility.

How does MIDI get from the MODX to the YC?  The computer has a Bluetooth connection that routes the MIDI from MODX to the YC?

My guess now is that the H4 is a CME Pro H4MIDI WC Advanced MIDI Interface which will merge in the WIDI or otherwise manage this wireless MIDI and offer that bus through its USB C connection to your USB hub.

yes, the WIDI transceiver within the H4 combines incoming MIDI from the MODX7, the Genki Wave Ring, a bluetooth breath controller, and the Korg RK100S2 when I have that around (I left it at my house in Italy, thus I am using the Alesis to control the FB-01 and SE-02 right now).

The H4 then also receives MIDI from the Alesis, the YC-61, and the Alexander Luminous Phase Shifter pedal (those are USB A connections with the hub) as well as the two MIDI DIN ports connecting to the FB-01, SE-02, and the DME24N (from the FB-01 Thru port).

The H4 can combine everything into one of it's 4 'virtual ports' for recording into Cubase (that's the H4 USB C port, not shown on the diagram). So in the case where I might want to try out the YC-61 dual manual thing, I could play on the MODX set for DIN output MIDI channel 5 (into the WIDI Jack) and on the YC-61 MIDI channel 4 out on it's USB A port 1. That could be recorded into a MIDI track in Cubase, although with the Elements version at one time the channels would be ignored so I am not certain if Cubase 13 still ignores MIDI channel information unless you pay for the Pro version...but otherwise I would want to play this track back and have MIDI channel 4 AND 5 sound on the YC-61 in this dual manual configuration.

So although this should be technically possible, perhaps the YC-61 does not support playing back dual manual MIDI tracks on TWO Midi channels, eh?

Also not clear about the rotary speaker commands coming into the YC-61 from it's DIN MIDI input jack - I know it changes the speaker rotation but probably those MIDI CC messages only 'live' within the YC and would not be sent out it's USB A port 1, eh?

Elements shouldn't ignore any MIDI (unless you tell it to).  I exclusively use the freebie version that comes with the keyboard.  It just doesn't have some fancy features but will record all incoming MIDI in - some form.

I did look yesterday at the H4 software and see the extensive routing and filtering capabilities.  I figured you could probably set all of that to do what you wanted so Cubase could "see" everything and route between the MODX and YC.  I would set it up so the DAW does the final routing instead of having the H4 patch between the two so there's more control over what is recorded separately and how it is played back.

The software routing of the H4 is a missing piece of information here to help connect the dots.  Then last piece would be any routing handled in the DAW.

Guess you have 5 more USB MIDI devices you could hub into the H4's USB A input.  Something the U4 doesn't have along with the U4 missing one virtual MIDI bus.  

I don't really know how the YC handles recording external DIN MIDI through USB.  It's easy enough to see.  Just open up a YC MIDI channel track and see what comes through.