The MC-101 can Receive (RX) and/or Transmit (TX) the following Control Changes:
1 - Modulation (RX)
5 - Portamento Time (RX)
7 - Volume (RX)
10 - Panpot (Rx)
11 - Expression (RX)
64 - Hold 1 (RX)
65 - Portamento (RX)
66 - Sostenuto (RX)
67 - Soft (RX)
68 - Legato Foot Switch (RX)
71 - Resonance (RX)
72 - Release Time (RX)
73 - Attack Time (RX)
74 - Cutoff (RX)
75 - Decay Time (RX)
76 - Vibrato Rate (RX)
77 - Vibrato Depth (RX)
78 - Vibrato Delay (RX)
80 - [FILTER] Knob (RX/TX)
81 - [MOD] knob (RX/TX)
82 - [FX] Knob (RX/TX)
83 - [SOUND] Knob (RX/TX)
84 - Portamento Control (RX)
91 - Reverb Send Level (RX)
93 - Delay Send Level (RX)
The MC-101 can send and receive Program Changes on all MIDI Channels, including on the Control Channel
Change Clips of any given track by sending Program Change 0 to 15 on the MIDI Channel of the Track of the MC-101. The time to change Clips will be determined by "MSTRSTEPLEN" setting in [TEMPO]
Change Scenes by sending Program Change 0 to 127 on the MIDI Control Channel of the MC-101. Ensure "Control Rx" is set to "ON", under System Settings
Play specific Drum Pads using C#1 to E3 on the MIDI Channel of the Drum Track. Not all notes within this range will play sounds, so please refer the the list below:
Pad 1 - C#1 (Pitch 37)
Pad 2 - D#1 (Pitch 39)
Pad 3 - F#1 (Pitch 42)
Pad 4 - A#1 (Pitch 46)
Pad 5 - C#2 (Pitch 49)
Pad 6 - D#2 (Pitch 51)
Pad 7 - F#2 (Pitch 54)
Pad 8 - G#2 (Pitch 56)
Pad 9 - C1 (Pitch 36)
Pad 10 - D1 (Pitch 38)
Pad 11 - F1 (Pitch 41)
Pad 12 - A1 (Pitch 45)
Pad 13 - C2 (Pitch 48)
Pad 14 - D3 (Pitch 62)
Pad 15 - D#3 (Pitch 63)
Pad 16 - E3 (Pitch 64)
Trigger individual Scatter Pads using C4 to D#5 (Pitch 60 to 75) on Control Channel. Only one Scatter Pad will be triggered at a time
Several preset Drum Kits have "hidden" sounds that are placed beyond the 16 Drum Pads. Use an external MIDI controller to play those additional sounds. You can even record those sounds with a MIDI controller, but you cannot edit them afterwards
You can sequence Clip Changes by having an external instrument sending Program Changes on the Track Channel. The time it will take to change the Clip is defined by the "MSTRSTEPLEN" setting in [TEMPO]
You can sequence Scene changes by having an external instrument sending Program Changes on the Control Channel. Unlike the Clip Changes, the Scene Changes are immediate and, therefore, independent of "MSTRSTEPLEN"
You can sequence Scatter Effects changes for super glitchy effects by having an external instrument sending notes C4 to D#5 on the Control Channel. On some devices you may need to use higher octave(s). For example, on the Dirtywave M8, you should use C6 to D#7 for this purpose
To record "Motion" of knobs C1 to C4 using external instruments, you need to have the external instrument sending CCs 80 to 83 on the same MIDI channel of the MC-101 track. Additionally, since firmware version 1.82, you can record up to 4 additional parameters sent by CCs 1, 2, 4, 7, 10, 11, 64, 91 and 93 and 1 additional parameter, which is Pitch Bend
On the MC-101, set the MSB on Clip to 0 for Bank A, 1 for B, 2 for C, 3 for D, etc. Each Bank must be different, otherwise, it will go back to Bank A if set to 0. Ensure the "Track Settings" have both "TX CC" and "TX PC" set to "ON"
From my experience, you need to set the MC-101 "Sync Src" to "AUTO" and prevent the External Instrument from sending "Sync" or "Clock", while still sending "Transport" information such as "Start" and "Stop"
For example, in my setup comprised of MC-101, M8 headless and Korg nanoKONTROL (all connected via USB with a Raspberry Pi 4, to send/receive MIDI and Audio between all devices), I need to do the following:
In "SYSTEM(MIDI)" settings of MC-101, set "Sync Src" to "AUTO", "SyncOut USB" to "ON", "RX Start USB" to "ON" and "Ctrl Ch" to "CH14", to avoid conflicts with the M8
In "MIDI SETTINGS" of M8, set "SYNC IN" to "OFF", "SYNC OUT" to "TRANSPORT" and "CONTROL MAP CHAN" to "16"
This is especially useful to keep both instruments in sync, reduce USB Audio latency when playing audio from both units and/or recoding audio from USB onto a Looper Track on the MC-101