The "Aphex face" manifests as an clearly audible weird abstract sound at the end of the track. It sits nicely in the mix, but it's also distinct from the actual

The "Aphex face" manifests as an clearly audible weird abstract sound at the end of the track. It sits nicely in the mix, but it's also distinct from the actual music - I would say it comes across like a signature rather than a musical element. The other examples in GP's linked article made more effort to produce things that are both musical and paintings in the spectrum, especially the Plaid track.