One of the first and most significant post-punk bands, Public Image Ltd. (PiL) were originally a quartet led by singer John Lydon (formerly Johnny Rotten, born January 31, 1956) and guitarist Keith Levene, who had been a member of the Clash in one of its early lineups. The band was filled out by bassist Jah Wobble (John Wordle) and drummer Jim Walker. It was formed in the wake of the 1978 breakup of Lydon's former group, the Sex Pistols. For the most part, the band's early incarnation devoted itself to droning, slow-tempo, bass-heavy noise rock, overlaid by Lydon's distinctive, vituperative rant. The group's debut single, "Public Image," was more of an uptempo pop/rock song, however, and it hit the U.K. Top Ten upon its release in October 1978. The group itself debuted on Christmas Day, shortly after the release of its first album, Public Image. Neither the single nor the album was released in the U.S.