This music slide rule was designed when there seemed no easy way of mastering the ukulele fretboard and to play in all 12 keys.The CSharpener helps this understanding greatly.

"I knew there was more to this instrument. The CSharpener is the Holy Grail for ukulele " Khristina Joy, Port Macquarie Jazz Singer, Voice and Uke Guru.

Visit: https://csharpener.com.au/