For many years I have been on many music forums - dedicated to keyboard instruments - Roland, Korg, Yamaha and several musical instruments related to various brands. The styles converted and adapted to a different instrument have been made available there many times, and no one ever did any problems.
If, for example, Casio in his new instrument Ct-X5000 used styles from Genos and placed in factory styles, it would have problems with copyright. If someone used Yamaha Genos styles to release a song without an agreement with Yamaha, that would also have problems with copyrights. Styles converted and adapted to Casio instruments will sound different and no producer will be able to claim copyright because they sound different than on the key on which they were created. The same law applies to styles for specific works - if they are available free of charge, there is no problem, if we sell them, we have to pay a fee for the given creator of the work - in Poland Zaiks is charged. But if we change the intro and ending a bit and it is different from the original song, we do not have to pay the fee anymore.