This is a great free program for beginners who want to learn how to play chords. It uses a small interface, using barely any resources. It doesn't list all chords but there are a vast amount of chords available and usually the most used are. If you continue to use the program you will find your chord memory will increase over time. The only thing required to get a serial number is filling out a simple form. It also has reverse lookup. For a free program I give it 4 1/2 stars.