Thanks all for your replies.

One more question.
I suppose the best way is to use the Music data base.
In my case I have a lot off styles made for the psr9000/9000pro some with Ots others without.

Some off you say to call up the style from the harddisk and set up the voices....and save into registrations 1,2,3,4...
This I understand but ...do I have to keep track off wich songs are on wich registration number.
I mean do I have to know the numbers off the registration banks.....
Maybe this sounds stupid...but it is new to me. I am used to my technics kn6500.
If I load a style from the harddisk and I change the voices , I save the settings in the registration memory and then I save the style to my harddisk...is everything alright to load the next time ?

Thanks for all your help,
Alain