Enable editing of the chords output by Chordify.
Sometimes the chords are wrong, but they're close. Enabling editing of the chords (in both timing and placement) would make it easier to play the songs as they really are.
chords are missing, wrong, wrong form. you name it. you should allow users to correct the charts so others can have accurate chords.
Byron Brummer commented
This would be both a great usability improvement *and* possibly be able to serve as feedback to the chord analyzing engine programmers. Similar to the way you can correct Google Voice mail transcriptions and send them back to Google's team for future improvements.