Vi Hart has an excellent video about music written with all twelve tones of the octave. <a href="https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=4niz8TfY794" rel="nofollow">https:&#x2F;&#x2F;www.youtube.com&#x2F;watch?v=4niz8TfY794</a>