Sid Vicious and Johnny Rotten were lead singers of which late 70's British punk-rock group?

Johnny Rotten (born John Lydon) was the unforgettable lead vocalist and lyricist for this seminal English punk band. With his sneering delivery and confrontational stage presence, he defined the group's anti-establishment sound. While Rotten was the sole singer, Sid Vicious (born John Ritchie) became the band's most notorious and iconic member. Vicious joined in 1977 as the bassist, replacing Glen Matlock, but it was his chaotic, nihilistic persona, rather than his musical skill, that cemented his place in punk rock history.

Assembled in London by manager Malcolm McLaren, the group was designed to be a shock to the system. Their one and only studio album, "Never Mind the Bollocks, Here's the Sex Pistols," released in 1977, is a landmark record. Tracks like "Anarchy in the U.K." and "God Save the Queen" caused a national uproar, leading to bans from radio airwaves and canceled concerts, which only served to amplify their fame and influence.

Though their original career lasted only a couple of years before imploding in 1978, the combined image of Johnny Rotten's snarl and Sid Vicious's volatility created a lasting legacy. They tore up the music rulebook, inspiring countless bands with their raw energy and rebellious spirit, and remain one of the most important and controversial acts in the history of popular music.