I came to music late in life after a colleague offered to give me piano lessons. Every Tuesday night for three monthes we had five hours of piano and lager. It was great! Of course, being of technical mindset, I immediately started looking into the math and music theory.

Trying to make sense of piano chords, I was surprised that by using list comprehensions I could generate a table of chords in very compact Python (chords.py). This page uses a mix of Vue.js and Javascript, it's pretty simple but not a elegant as the Python solution.

The chord app, above, is a compact way to compare how chords sound without learning them all off by heart. The sound implementation is very basic and I am reading up on the Audio API to improve it.

The tuning app, above, came about after reading the history of how people have been very upset about the "correct" way to tune instruments (Temperament: How Music Became a Battleground for the Great Minds of Western Civilization). To make this more useful, I plan to add more octaves and various other tunings and show up the pythagorean comma.

I would propose the the piano keyboard as a most successful user interface, having worked unchanged for centuaries. However, it does not fit into the tiny screen of a mobile phone, so I have not tried to reproduce one here.