"Lux Æterna" is a song by American heavy metal band Metallica, released on November 28, 2022 as the lead single from their upcoming eleventh studio album, 72 Seasons (2023).^[3] The song was first played live on December 16, 2022, at the Microsoft Theater^[4] in Los Angeles.^[5] James Hetfield has described the song as "an upbeat, kind of fast and joyous song" furthermore, describing it as a NWOBHM song.^[3] The song reached number 1 on the Billboard Hot Mainstream Rock Tracks chart for 11 consecutive weeks, tied with their cover of Bob Seger's "Turn the Page".^[6]