OCTA MUSIC is a method for teaching music theory & essentials.
 
The "Rhythm Cards Set" is a PDF ebook that includes over 65 pages of printable materials.
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Included:
- Ideas on how to use material
- 160 different cards
- 8 different colours (20 cards each)
- Plus 14 special cards
- "Empty" cards for making your own games!
- Colour challenges