Contribute video: Computer Music Workshop 2 - Keyboard Chord Progression 1

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 / ____||  \ \\/ // | || | ||  \ \\/ // 
/ //---`'   \ ` //  | '--' ||   \ ` //  
\ \\___      | ||   | .--. ||    | ||   
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  `----`     `-`'   `-`  `-`     `-`'