Legacy of 999

X-Ray Spex were an English punk rock band formed in 1976 in London. They were led by Poly Styrene, who formed the band after watching the Sex Pistols live. Styrene was one of the most distinctive personalities in the British punk movement, because of her singing style and atypical and unorthodox appearance, taking influences from reggae as well as punk. Her lyrics primarily dealt with anti-consumerism and anti-capitalism, and were an influence on the 1990s riot grrrl movement. The line-up also included saxophone, which was little used by other punk bands.

The Dillinger Escape Plan is an American metalcore band. The band was formed in 1997 in Morris Plains, New Jersey by guitarist Ben Weinman, bassist Adam Doll, vocalist Dimitri Minakakis, and drummer Chris Pennie. The band's use of dissonance, odd time signatures, polyrhythms and unconventional drum patterns became a staple of their sound, although later albums incorporated more melody, and influences from a range of genres. The band's lineup shifted numerous times throughout its existence; by the time the group dissolved, Weinman was the only remaining founding member. The final lineup also included longtime members Liam Wilson on bass, Greg Puciato as lead vocalist, and Billy Rymer on drums, alongside then-newcomer Kevin Antreassian on rhythm guitar.