no, apparently not. I have them on a stick but when I insert it in either front usb holes the A4 does not recognize that anything is there. I'm not even sure if they would work since they might have been from a much earlier model Ketron product. Just thought it would be neat to have a couple that are suppose to sound like Johnny Cash backings. Not a big deal however since the A4 comes equiped with so many neat factory styles :-)