R2D's Automated Garden of Ragas

This is a set of supercollider compositions to musicially illustrate some l-systems I wrote.

Update: 2026-03-18 I had completly forgotten to update this page. I published a whole album of these on bandcamp : Rags for R2

Each example is an L-System and uses intervals/ratios from ragas to make music. It started last year when I worked a bit on @avanka ’s lsystems drawing tool. That was fun. https://anvaka.github.io/lsystem/ Then, I rediscovered an L-System composition thingy from http://sccode.org/1-5bp . It’s fun, too. There’s a lot more at Github repo.

Succulent, after Bourke

axiom: A
rules:
  A =>[FY]A[FXA]
  F => XF
  X => FY
  Y => [F+F+F][F-F-F]
Raga: Punnaag-avaraali
Up 2*9/5, 1, 16/15, 6/5, 4/3, 3/2, 8/5, 9/5
Dn 9/5, 8/5, 3/2, 4/3, 6/5, 16/15, 1, 2*9/5

Grains after Bourke

axiom: Y
rules:
   X => X[-FF-F][+FF+F]FX
   Y => YFX[+Y][-Y]XFY
Punnaag-avaraali raga
Up 2*9/5, 1, 16/15, 6/5, 4/3, 3/2, 8/5, 9/5
Dn 9/5, 8/5, 3/2, 4/3, 6/5, 16/15, 1, 2*9/5

Hexagonal Gosper

axiom: Y
rules:
 X => X+YF++YF-FX--FXFX-YF+
 Y => -FX+YFYF++YF+FX--FX-Y

See the Github repo for details.