PSR-sx900 edit / recording

[paulbeteivaz]

Hi everyone, Yamaha is so busy that have no time to reply for a technical support request.
Anyway, my question is very basic so many of you guys might be able to help.
I recorded a song through "multi-recording" step by step function and now all I need is to add some style variations to my song, in other words want to edit and insert variations, do you know how?