A small synthetic fly brain DJs an endless generated set, from warehouse techno to lo-fi, mixing track into track on two decks. The tracks lay out the grid; the neurons decide which hits land, how hard, and which notes. You can steer the mood, rewrite patterns and ride the mixer while it plays.
Every track is generated on the spot from ten genre templates, so the set never repeats. When a track reaches its outro the fly mixes in the next one, choosing the technique a DJ would: a long stem-by-stem blend for similar tracks, a build and drop when energy jumps, a breakdown bridge or an echo when tempo or style changes a lot.
Click a step to add or remove a hit in the part the lead deck is playing; the brain still decides whether it lands. Click an instrument name to mute it, drag its slider for level. Double-click any slider to reset it.
Each module plays its own instruments. Mute silences its neurons, Boost drives them with a steady stream of spikes, like an optogenetics experiment. Activity is measured against each module's recent average, so a boosted module gets wild for a few bars and then settles.
The network is small and synthetic: 179 leaky integrate-and-fire neurons whose wiring follows fruit-fly motifs (sparse Kenyon cell input with APL inhibition in the mushroom bodies, a ring attractor in the central complex) but contains no connectome data. The next step is to drive the same decks from the full FlyWire model (about 138k neurons) by Shiu et al.: github.com/philshiu/Drosophila_brain_model.