Good for leaning new tunes! I use it to help play songs by ear. When my ear can't figure something out  it's nice to have notes. It's also great for deciphering chords and rhythms. I play viola  so I'm used to playing and transposing treble clef. I will need to learn the bass clef to make the most use of this app. I suppose an alto clef option would be too much to ask for?
January 20 2015