Use the following procedure to split the keyboard on the HP507:
- While holding the Transpose button, press the Twin Piano button.
The Split Play menu will appear. - To change the right hand tone, press a Tone button and use the + / - buttons to make your selection.
- To change the left hand tone, hold down the Transpose button and the Twin Piano button. While holding down these buttons, use the Tone buttons and + / - buttons to make your selection.
- To exit Split Play, hold down the Transpose button and press the Twin Piano button.