Maybe here you can find some info : https://www.music-service.nl/

or Here : http://www.toetsenservice.com/

Or try to search in Italian language with translate
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Genos2,Korg Pa5X , Yamaha YC61, Ventilator2 . : https://www.youtube.com/channel/UCmC6hdAR1v5lYN8twfn0YbA