FlyBrain · Music Lab

J. S. BACH

Prelude in C major

BWV 846 · opening eight bars · synthesized keyboard

READY TO LISTEN

LEFT ANTENNA0.000

RIGHT ANTENNA0.000

AUDIO SPECTRUM60–1,000 Hz drives the model

60 Hz250 Hz500 Hz1,000 Hz

0:000:28

Audio stays on your device

Loading the brain. The first load downloads about 96 MB, then builds the neural model. Play will become available automatically.

NEURAL RESPONSE OVER TIME0.00 s model time

Auditory inputFirst-hop targetsDescendingMotor

Mean simulated rates · log display scale · latest 200 samples. The fly illustration shows input level, not a measured behavior.

LISTENING SETTINGS Sound

Speaker volume35%

For your ears; does not change neural input.

Stimulus strength1.0×

Stimulus directionBoth sides

LeftRight

Silence input to the fly

Music continues for you; neural activity can decay.

NEURAL ACTIVITYLEFT / RIGHT

JO-A / JO-B are stimulated sensory cells. First-hop, descending and motor neurons receive activity only through the graph. Bars use a log display scale; numbers are raw mean rates.

0 active neurons— ms / step

Audio plays in real time. Each neural update samples the current sound and advances the model by 20 ms; slower devices take fewer samples.

What is the fly hearing?

We take the amplitude of audio filtered to 60–1,000 Hz and feed a bounded drive into MaleCNS cells labelled auditory with types JO-A or JO-B: neurons from Johnston's organ in the antennae.

This is an engineered sensory adapter. It does not model air-particle motion, antenna mechanics, subtype frequency tuning, musical understanding or enjoyment. Both JO families receive the same amplitude signal. The direction slider scales left/right input using anatomical side labels.

The shared rate model propagates that drive through the connectome. Connections are anatomical; their dynamics are simplified and uncalibrated. Unlabelled or centre-side cells are excluded from bilateral plots.

Change the stimulus, mute it, or compare Bach with the pulsed tone. Reset starts a fresh trial. CSV records both audio and model clocks, settings, inputs and responses.

Methods and sources ↗

Bach, meet the fly.

Prelude in C major