Machine Learning for Dummies with TensorFlow.js

I was recently messing around with the new TensorFlow.js Since I can only do things with JS, I was glad to hear about this becoming available. From my brief experimentation, I have found the API to be extremely easy to use, given one has some basic Machine Learning concepts under one's belt. I devised a simple experiment which I didn't particularly expect to be fruitful, but if I was able to get a functioning model it would be a proof of concept for handling actual datasets. As I suspected, the results were bad for predicting new examples, but I still think my efforts were productive enough to be worth sharing, and I definitely learned some things along the way. My initial idea was to create a classifier for music genres, one which given a new example of a simple melody would be able to classify it as one of four: blues, pop, jazz, and metal.