Oscillator Keyboard Tracking

Oscillator 1 has a button named "Kbd. Track". If this is switched off, the oscillator pitch will remain constant, regardless of any incoming note pitch messages, although the oscillator still reacts to note on/off messages. This can be useful for certain applications:

When Frequency Modulation (FM) or Ring Modulation is used.

This produces non-harmonic sounds with very varying timbre across the keyboard.

For special effects and non-pitched sounds (like drums or percussion) that should sound the same across the keyboard.