You can change the individual instruments or sounds of a DRUM track by doing the following:
1. Press the TRACK SEL [1] - [4] button of the DRUM track whose instrument you want to change.
2. Press the PAD [NOTE] button so that it is lit.
3. Hold down the [SHIFT] button and press the pad that you want to edit.
4. Once the pad is selected, the pad remains lit (red) and the DRUM INSTRUMENT browser appears.
5. Turn the [VALUE] knob to select PRESET and press the [VALUE] knob (ENTER) to confirm your selection.
6. Turn the [VALUE] knob to select a category and press the [VALUE] knob (ENTER) to confirm your selection.
7. Turn the [VALUE] knob to select the new instrument and press the [VALUE] knob (ENTER) to confirm your selection and load the instrument onto the DRUM track.
For more information please consult the Reference Manual available here: