Board Thread:Off-Topic Discussion/@comment-6433273-20151126190829/@comment-30602727-20160129020338

"Producers who want to use him for commercial reasons need to be aware special permission is needed to do so as he has a special license condition. He cannot be used for profit and any work can be distributed only for free if the artist has no permission."

If you're using him without any intention of selling the song, then that's fine. You don't need permission for that.

If you're making a song and/or album and you intend to sell that, you need to contact YAMAHA for permission.