ChainSynth (alpha.chainsynth.app) is the first step in the creation of a generative audio-visual synthesizer working with real-time blockchain data on Polkadot. It updates the generated audio at every finalized block as explained below.

• Modulo of the block hash determines the root note and the scale, from the following set: C Lydian, F Major, D Major, G Major, A Major, G Whole-Tone.
• Number of events in the block defines the speed of the succession of the melody notes.
• Number of extrinsics defines the depth of reverb applied to the melody.

More info, including verification of the address if needed, can be found here.