Music isn’t just for ears anymore. What ears have done for millions of years, oscilloscopes have done for about a hundred. Grab a thrift store keyboard, an electronic kid’s toy, or any other electronic soundmaker and with a quick hack, turn those tunes into something your eyeballs can enjoy.
This is also a wonderful introduction, to waves, frequency, amplitude, harmonics, and many things under the physics sun. So, take that, you may just get in some learning, too. 🙂