"The CSharpener is the Swiss Army knife of Music Education"
Fred Paikan, Sydney business guru.
"There must be a reason why the Major/Minor flip works but I cannot think of one." Professor Geordie Williamson examining the CSharpener after the Maths and Music lecture, Sydney Science Week 2019. However in May 2021 New York Jazz Professor Chris Parker explained it with the symmetrical tuning of the uke and Negative Harmony Theory! More later..