Street-Life

Update 2025-02-09:

Upgraded this 8 years old project to a more recent version of Kotlin and Gradle.

Play the Street-Life.mp4 to hear what it sounds like.

Initial release, 2018-06-18:

I was listening to this song and wanted to play a bit of it on my keyboard (the computer's one, not the piano). Many Java music libraries are available (jMusic, jFugue). First, I tried with jMusic, but it seems to be a bit unstable. I tried to figure out an easy way to write the parts of the song and decided to write a POC in Kotlin.

The main.kt contains the first 5 bars of the song. It's far from perfect (and relies on the MIDI sequencer), but you can easily understand the source and how it generates the music.

The smallest unit is a Chunk class that contains many sequences of keys. The magic of Kotlin allows some basic operations:

• chunk + 12 will transpose the chunk to the upper octave.
• chunk * 4 will repeat the chunk 4 times.
• chunk1 then chunk2 will play the chunks in a row.
• chunk1 or chunk2 will mix the chunks.