what am i doing wrong... i tried to record a patch. i,e. piano..then tried to enter second patch.. i.e.. guitar.. not rhythm or bass. through edit song. it comes up 1-16. sections of possible data or patches . when i try to record again instead of hearing my first chose patch. all i can hear is the first and second patches coming through at the same time. in other words the piano as gone and replaced with my second chose patch. can i do that on edit songs . or do i have to go through layered .