You like music and want to learn about keys, scales, harmonies and their representation on a common set of instruments and tunings ?

You are interested in finding new voicings and chord substitutes as well ?

You want to look behind the scene of music pieces and work guitar tabulature out from WAV files or from your IOS devices' microphones.

You like playing along with guitar or bass backing tracks and you need an app that helps you to store your favourite tones and to explore a music piece string by string with a smooth backing track integration.

Then "Hofmann's Apps" has some interesting tools for you available on IOS and Mac OS X.