Undulating tangles in C and S minor. When I first saw this challenge my first reaction was "HUH?" But as I read through the entire post I realized that I LOVE these type of tangles. So when I started to do these I couldn't do just one.
In the first Zendala Cadent uses a basic S stroke but as you can see I love to triple the strokes. I did it within a Yin Yang framework since that shape is the ultimate curved line. I did Cadent in pencil VERY LIGHTLY on the side that would be black and then filled in the space around it leaving the negative space as the Cadent.
The second tile also began with a simple S shaped string. I drew Surf's up in the middle and added Nebel to the left and Ditto to the right.