Which type of MIDI message is used to assign MIDI controls to plug-in parameters?

• A. Note On
• B. Program Change
• C. CC (Continuous Controller)
• D. Aftertouch

Answer: (C)

Continuous Controller messages are designed for mapping physical controllers to software parameters. They carry two key pieces of information: a controller number that identifies which plug-in parameter you want to control, and a value from 0 to 127 that determines how much that parameter is adjusted in real time. This makes them ideal for assigning knobs, faders, or modulation wheels to plug-in controls. In contrast, Note On starts and stops notes, Program Change switches presets, and Aftertouch sends pressure data after a key is pressed, which aren’t used for general parameter mapping. So for assigning MIDI controls to plug-in parameters, the Continuous Controller messages are the right choice.