Keyboard or controller not responding in MainStage
MIDI is coming in, but no sound
- Restart your computer.
- Make sure your keyboard is assigned in Layout mode. See Connect your keyboard.
- Check your audio output: choose your interface in MainStage > Settings (or Preferences) > Audio, and make sure you're sending to the right outputs (1-2 by default).
- Select a channel strip and open the MIDI Input tab. Keyboard should match your assigned keyboard.
- Make sure the master volume isn't down, the Output 1-2 channel strip isn't muted, and the master mute button (top right) is off.
- Still nothing? Open a backup copy of Sunday Keys, or download a fresh one from My Purchases, then contact us with what you've tried.
Find out what your gear is sending
The MIDI Message Monitor (Window > MIDI Message Monitor) shows every message MainStage receives. It's the fastest way to find a connection problem.
A few keys don't play
Something else may be sending the same notes. Drum pads and buttons often send notes, and if you've assigned one in Layout mode, MainStage treats those notes as that control. Remove the assignment, then set the pads to send MIDI CC instead (your manual shows how).
Set up drum pads
Set them to send MIDI CC, ideally on a different channel than your keys, using CC numbers that aren't commonly used, like 14 to 31. Then assign them in Layout mode.
A knob or fader doesn't respond
Not every control sends MIDI, especially on keyboards with built-in sounds. Check your manual to see whether it can, and how to turn it on. For extra knobs and faders, we recommend the Korg nanoKontrol2. It's reliable and comes mapped to Sunday Keys.
The onscreen keyboard doesn't match mine
In Layout mode, select the keyboard and set its number of keys and lowest note (or click Learn and press your lowest key). To show layers above the keyboard in Edit mode, check Display Keyboard Layers.
Middle C is labeled C3 or C4 depending on the standard. Change it in MainStage > Settings (or Preferences) > MIDI if you like. It doesn't change the sound.
Ignore a keyboard or controller
By default, onscreen controls listen to All MIDI inputs. Assign each control in Layout mode to the specific gear you want. You can also select the concert, open Assignments & Mappings, select Unassigned at the bottom, and uncheck Send unassigned MIDI to all channel strips.
Velocity: too hard or too soft
- For your whole keyboard: in Layout mode, select the keyboard and adjust the More/Less velocity slider.
- For one sound: select its channel strip, open the MIDI Input tab, and adjust Velocity Scaling.

- Make a sound nearly silent when you play softly: add the Velocity Processor MIDI plugin and turn Make Up down to about -45. Notes played below about velocity 40 drop to roughly -50 dB, which is inaudible in a layered Patch.
