There are 16 color-coded cards for each of six units, for a total of 96 cards.
<iframe width="1280" height="720" src="https://www.youtube.com/embed/6syKxM1ETAM" title="Piano Safari: An Introduction" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>