Roland Boutique JX-08 Synthesizer Module - Manual (Page 22)

Using the [1]–[13] Buttons as a Keyboard (NOTE)
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Using the [1]–[13] Buttons as a Keyboard (NOTE)
You can play the [1]–[13] buttons like a keyboard.
1. Press the [NOTE] button.
The [1]–[13] buttons light up. At this time, you can use the [1]–[13] buttons as if they were keys on a keyboard.
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Use the [14] or [15] button (the OCT [-] and [+] buttons) to switch the tonal range of the keyboard in octaves.
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Press the [16] button to switch to solo mode ([SOLO] button), and the [PAGE/TIE] button to switch to poly mode ([POLY]
button). Also, you can switch to unison mode by pressing the [PAGE/TIE] button while holding down the [16] button
([SOLO] + [POLY] buttons).
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When you hold down the [NOTE] button and press the [16] button or the [PAGE/TIE] button, you can switch to solo mode,
poly mode or unison mode, regardless of what mode the [1]–[16] buttons are in.