I often see these types of ads passing by, they are usually collections of styles that you can download anywhere on the internet for free.
but sometimes there is a nice or good style and you are lucky. But choosing 9000 styles and seeing if there is something beautiful in between costs a lot of time.
For good styling for your Keyboard you can better contact the manufacturer or at D.o.o. >>

https://www.d-o-o.de/7,19-ck-ketron-sd-1-7-9-40-midjaypro-midifile-styles.html

Impuls