This calculator doesn't have every tone.and i arrange for easy to play.
So..This cover is little different.
But i hope you like it..
Thank you for watching(*´∇｀*)
(All my videos)→https://www.youtube.com/channel/UCbvQHCZJHHS4PJpatQGH-0w
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You can be my patreon here.】
This calculator name is maybe AR-7778.