'Led Zeppelin IV'
Led Zeppelin's fourth album is variously known as Led Zeppelin IV, Untitled, Four Symbols and Zoso, but its true title is formed by the four unpronounceable symbols chosen by each band member. Page did that to retaliate against writers, including several in Rolling Stone, who'd snubbed the band's music: "After all we had accomplished, the press was still calling us a hype. So that is why the fourth album was untitled." He also refused to give any inter- views for a period of 18 months.
Thus, one of the bestselling rock albums of all time (23 million copies in the U.S., at last count) was fueled by the bandmates' resentment; they were victors who felt like underdogs. The gatefold album design had no photos or band information, which was "professional suicide," one industry expert warned Page, but it only added to the album's – and group's – still-enduring air of high-school-hallway mystery.
– Rob Tannenbaum