Roland SH-4d Digital Desktop Synthesizer - Manual (Page 55)

Creating a Pattern (Step Sequencer)
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Inputting and Editing Notes
You can use the [1]–[16] buttons to input notes for each step.
When editing with the step sequencer, make sure that the [PATTERN] button is not lit.
When the [PATTERN] button is lit, you can press the [EXIT] button several times to return to the top screen.
Tone Part
1. Hold down one of the [1]–[16] buttons and press a keyboard button.
You can also hold down a keyboard button and press the step [1]–[16] buttons corresponding to the note you want to input.