After reading this page you’ll have a little hands-on experience at determining the key signature of a song. This is a skill you’ll develop with time as you learn more and more about how music works, but you’ll get a firm understanding of what to look for right here, right now.
There are up to 24 possible key signatures. Since there are 12 tones in music, there can be 12 major keys and 12 minor keys.
In the exercise on this page we’re going to practice identifying the key signature of a song. Before you try it, be sure you know the difference between the sound of a major chord and the sound of a minor chord.