Some people have perfect pitch. For them, transcribing the chords of a song is just as easy as writing down the lyrics. For the rest of us, life is way more difficult. Fortunately, now you can use Chorddetector to help you with the task!
Chorddetector is a very easy to use mp3/wav-player which features an automated chord detection engine. As simple as that.
Of course, what is going on under the hood is mighty complicated but all you need to do is load the song whose chords you are interested in, press play, and off you go!
Chords will be displayed in realtime, so you can play along live with your instrument.