The ScaleSlider shows all the patterns for the minor pentatonic scale
(used in pop, rock and blues) across the whole fretboard.

This shows what notes players can use that will be in tune.

Players then make up their own riffs.

Players change the key of the scales shown by moving the slider until the key they want to play in appears in the window.

Fits easily into guitar cases, a lightweight useful tool for guitarists from beginners to able level players.