Technically, a TuneLing is a digital file containing detailed information about the musical content of a specific recording.
The TuneLings App uses the recording, and its TuneLing, to teach you how to play a song. You do not need to read music!
The App creates, in real time, an animated visual presentation, perfectly synchronized to the recording, showing you correct chords, notes, lyrics, annotations, and more. You can customize both the content and the layout of what you see. To facilitate learning by playing along, you can change the speed and/or pitch of the song, use loops (pre-made, or your own), and much more.
A TuneLing’s visual content is not “carved in stone”, like a video, because it’s created as you see it. That means that you can change it – even while it’s playing!
TuneLings are always made by skilled musicians, not error-prone algorithms or “artificial intelligence”, so they they make musical sense, and they’re accurate.