Boss Dr.Rhythm DR-550 Owner's Manual page 35

[3]Creation of a Simple Rhythm Pattern
Try-entering the rhythm shown here by Step Write.
last step : 16
+
scale 123 45.6 7 B 9 10111213141516
(8) Kf, within the rhythm pattern you have selected, there 15 existing
then :
displayed.
(5) First, enter the closed hi-hat.
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