Personal story: Over a decade ago, when I was learning to play the piano, I made an arrangement of Twinkle Twinkle Little Star for my girlfriend (now my wife).

Personal story: Over a decade ago, when I was learning to play the piano, I made an arrangement of Twinkle Twinkle Little Star for my girlfriend (now my wife). While the arrangement was pretty basic, I also wanted to present a printed score and that's when I turned to LilyPond. Here are the files if anyone is interested to take a peek: <https://susam.net/files/music/twinkle-twinkle-little-star/ https://susam.net/files/music/twinkle-twinkle-little-star/>. The .ly file has the LilyPond code. The .midi and .pdf files were generated from it automatically. The .mp3 and .ogg have the audio recording of the music played manually on an electronic keyboard. Please note that the LilyPond code might not reflect optimal or idiomatic practices, given that I was new to both music and LilyPond at that time. Nevertheless, it was very satisfying to see the polished output generated by LilyPond. I remember getting the same kind of satisfaction when I discovered LaTeX about two decades ago and realised that I could finally render mathematical formulas beautifully that look exactly how they should look.