HP-1: Selecting Dual Tones
Use the following procedure to select dual tones:
1. Simultaneously press two tone buttons (e.g. Piano 1 + Strings, Harpsichord + Organ 1, etc.)
2. Hold down the REVERB button and press one of the two selected tone buttons to hear the tones printed below the buttons.
Refer to the Owners Manual, pg. 10 for more information.