This Norske chord organ has 2 octaves and 6 chords. It's complete with the music holder and instruction song book with 21 songs. I love that the instructions are 1 page. The red level on the front controls the volume, all the way out for soft. A knob turns it on and off. The organ is 19 1/2'' x 10'' x 8''. It plays great. This vintage top organ is in excellent condition.