Aphex Twin - 4 (1996) [in honor of the compromised TLS certificate today]

https://arstechnica.com/security/2026/10/the-internet-goes-on-high-alert-after-discovery-of-8-compromised-tls-certs/

Astonishingly, the private keys were 4, 56, 66, 115, 155, 156, 230, 237.