Until recently I wasn't aware there was such a thing as a music font, so when I came across SMuFL I immediately wanted to use it to create images incorporating musical notation.

This one illustrates the cycle of fifths but as a spiral rather than a simple circle...

"Spiral of Fifths" starts in C major. Each circuit of the spiral passes through all 12 major keys before returning back to C major again ready for another circuit. The notes in each cycle become fewer and longer as the space becomes more restricted towards the centre of the spiral. After passing through each key 5 times, the piece ends on a single held C. The notes are chosen and arranged for their visual appearance rather than musical quality, but should be musically accurate and playable!