The Yamaha Club shop has the Regi-Stick for the PSR-S900 available for £29.99.

I got it, and I am very happy with it.

What do you get?

A usb stick. On it are registrations. There are 80 melody maker settings. These are tweaked accompaniment voices that make the keyboard come alive.

The other 296 registrations are style + accompaniment registrations. Many of the styles called up are not tweaked and the purpose is to merely associate the style with the registration's title. Some of the styles are tweaked in a way that gives the style a new sound. With all of these 296 registrations a lot of energy is given to tweaking the accompaniment voices as well.

If you want new accompaniment sounds to play with, this regi-stick is a hit. I'm having a lot of fun with these sounds. If you want new styles, there is nothing on here but registrations only a few of which are tweaked in a way to make the original style sound completely different.

This was well worth the price IMO.

Beakybird