All songs in this songbook include chords and can be transposed up or down. You can also hear the chords. Sheet music (the melody) with chords and melody is also include. And you can hear the melody and chords playing. You can also transpose sheet music. You can create a user, ind include your own songs to the songbook. The purpose of this songbook is to stimulate singalong and music in general. If you want to comment on theSongApp.com you are welcome to write your thoughts on the facebook page. Just push the facebook button under this text.