The Kyokai's YouTube channel is going to feature top rikishi singing. The first one (will be up in an hour or so) will be Terunofuji. There will be four of them. On the 13th- Enhou. on the 15th- Oonoshou, and on the 17th Tobizaru. They will be uploaded at 7 PM JST.
Terunofuji- will be on in an hour and a half. And will be coverted, of course.