1. U2

U2 began as a post-punk band in the late 1970s, but their 1991 album Achtung Baby marked a dramatic shift toward experimental and electronic influences. Embracing alternative rock, industrial, and dance elements, the album received widespread acclaim and revitalized their career. Selling over 18 million copies worldwide, Achtung Baby produced hits like “One” and “Mysterious Ways” and earned a Grammy Award for Best Rock Performance. Critics praised the band’s bold reinvention; as Rolling Stone noted, U2’s transformation “vaulted them into the stratosphere of superstardom.”