Korg Pa5X Performance Manual page 385

Playing harmony
Play the keyboard. Depending on the chosen harmonization type, you will play
1
chords or separate melody lines.
Sing along with the chords and melody lines you play on the keyboard.
2
Where do chords and notes come from?
Each Mic Preset contains settings to choose the source of the chords or notes.
Depending on the preset, you will play on the keyboard, and/or let the MIDI Song
send notes from a track selected from the preset.
You can find more information in the section dedicated to programming the Mic
Presets (see Choosing a global Mic Preset
Usingthemicrophoneeffectsandharmonization |375
on page 353).