"77" is a song by the English rock singer Billy Idol featuring Canadian pop-punk musician Avril Lavigne, released in 2025 as the second single from his ninth studio album Dream Into It. The two performed the song on the 28 April episode of ABC's Jimmy Kimmel Live!
"77", a duet with Avril Lavigne, sounding more like one of her songs than Idol's, was described as a "textbook, Disney Channel pop-punk banger" by Blabbermouth.net, and a "hooky pop" song by Ultimate Classic Rock. Critics have noted the song merges the raw punk energy emblematic of Billy IdolâÂÂs 1970s roots with the catchy, mall-punk sensibility that defined LavigneâÂÂs early 2000s style.
1977 is a famous year for punk and of significance for Idol, because he was part of the Bromley Contingent, a group of fans that followed the Sex Pistols around from show to show. He was also the frontman of punk rock band Generation X, but they wouldnâÂÂt release their self-titled debut until the next year. Idol, in a video posted on his social media page, explains to Lavigne the circumstances that led to punk rock. Both the USA and UK were in depressions at the time, so societal outcasts expressed themselves in the form of music. He then explained to Lavigne that he considered the songâÂÂs middle part to be "a reflection on both of us", noting, "I could join together ... what we felt like in the past with the people today. ItâÂÂs not so different."
Credits adapted from Tidal.