http://www.apronus.com/music/lessons/unit01.htm http://www.apronus.com/music/lessons/unit01.htm First Music Lesson octave http://www.apronus.com/music/lessons/unit01.htm http://www.apronus.com/music/lessons/unit01.htm http://www.apronus.com/music/lessons/unit01.htm http://www.apronus.com/music/lessons/unit01.htm http://www.apronus.com/music/lessons/unit01.htm octave First Music Lesson