- List the steps to reproduce the problem below (if possible attach a sketch or copy the sketch code in too): **LIST REPRO STEPS BELOW** Follow [the guide](https://learn.adafruit.com/adafruit-eyelights-led-glasses-and-driver/music-reactive-lights), then you'll get an import error. The cause is that spectrogram moved to utils as committed [here](https://github.com/v923z/micropython-ulab/commit/67538b0ee0969c95968a7129fa19c7dc4d098945). So, the fix is simply update the import statement. I will make a PR.