The application learns the key to guitar, bass, and Ukulele this is a very lightweight application. This application can help those of you who want to learn guitar keys, because there are various types of guitar keys in it including major, minor, and other key variations. Likewise with the key of the bass guitar and guitar ukuele, string 3 and string 4.

Features:
1. guitar lock
2. bass guitar lock
3. Ukulele 4 string guitar keys
4. Ukulele 3 string guitar keys

May be useful :)