Each pad belongs to a mutually exclusive group. This means that only one pad within a group may play. Pads from other groups may play simultaneously. The group is indicated by the single letter prefix of the pad name. There are up to 26 groups, A-Z. | Each pad belongs to a mutually exclusive group. This means that only one pad within a group may play. Pads from other groups may play simultaneously. The group is indicated by the single letter prefix of the pad name. There are up to 26 groups, A-Z. |