A while back, I speculated on what a Zentangle sounds like, and I came up with a way to convert Zentangles into sounds. Recently, I ran across an article that addresses the opposite question: what does sound look like? It turns out that, in some cases, it can look a lot like a Zentangle! The image at the top of this article is from cymascope.com, which explores the use of the Cymascope in visualizing sound with applications in art, physics, and biology, among others.