add theme song

Author: kentcdodds

exercises/README.mdx

@@ -18,3 +18,10 @@ You're gonna rock with this! Let's get going!
 🦺 One note, we're going to be doing some fun hackery around here so we'll be
 abusing TypeScript a bit. Feel free to throw around `any` and
 `// @ts-expect-error` here and there.
+
+🎵 Check out the workshop theme song! 🎶
+
+<VideoEmbed
+	title="Epic React: Build React Hooks Theme Song"
+	url="https://www.youtube.com/embed/bSLrsTkyh3c"
+/>