I received my PO-28 as a very pleasant Christmas present and have had a blast with this little wonder (I'm new to anything like this) . I've made a lot of head way with it but can't seem to figure out the drum sequencer with multiple sounds. Once in the sequencer only the bass drum ( key 1) sound will play, want to be able to add snare and what not to the sequence instead of live record. Hope I explained this all right. Any help would be appreciated, Thanks in advance.