Ron, if you are using registrations for both the T4 and S-970 for your songs, and store the registration information (styles, voices, etc...) on a USB drive, they should transfer without any problems. Just plug the drive in a play. Additionally, there are FREE programs available from Michael Bedesem, Jorgen Sorensen and others on the PSR-Tutorial forum that provide for onscreen editing of registrations that make the transition very easy. Now, there will be a problem using onboard styles and voices that are in one keyboard and not in the other, again, those programs will make these problems very easy to cope with.

Hope this helps,

Gary