. . . . . . . . . . . . . . . . "2374"^^ . . . . . . . . "41769105"^^ . . "A circular keyboard is a musical keyboard in the shape of a circle or semicircle. They are a relatively new concepts in music."@en . . . . "October 2020"@en . . . "Circular keyboard"@en . . . . . . . . "A circular keyboard is a musical keyboard in the shape of a circle or semicircle. They are a relatively new concepts in music."@en . . "1116852763"^^ . .