Dear All,
Seeing the number of comments and thought's about this subject, I decided to ask the authorithies/specialists on these matters!

In the netherlands these are called BUMA.
This is the place where you protect your songs/compositions worldwide!, due to their agreements with the simular organisations in most countries!

The answer was VERY CLEAR!

Styles programmed in keyboards CANNOT HAVE COPYRIGHT!
They lack originality, and only contain a few chords!


Now, keep in mind that copyright protection in the Netherlands is one of the most strict worlwide! You even cannot have midi files on your webside containing copyright songs!

Each place providing music publicly has to pay a fee! That includes your own office's in case there are more as two people listening!

This same organisation (BUMA/STEMRA) tells me that styles cannot have copyright!
I am pretty confident that Yamaha or any other brand does not have a chance in a legal case!