I'm really enjoying playing with Protoplug for scripting your own VST plugins in Lua.
This sketch uses 3 scripts with the plugin.
My own Waveflavours synth (playing the ever-evolving drone chords). The default "midi chordify" (that chord isn't programmed, it's being generated automatically from single notes) and another self-written variation that chooses random notes from a chord which is driving the u-he's "Triple Cheese" plugin.
All these scripts are hosted in FL Studio, which is also providing the drums.
Protoplug is really exciting to me, because I can finally turn FL Studio into something scriptable, and which I can use more like the way I was using Sonic Pi, to experiment with algorithmic composition.
Update : You can find my scripts for ProtoPlug on GitHub