Check out this recently circulated footage of a 16 year old Billie Joe Armstrong performing with his childhood (pre-Green Day_ punk band Desecrated Youth. Apparently, the clip was originally featured in the 2017 documentary Turn It Around: The Story of East Bay Punk.
The 30 second clip features band mates Raj Punjabi, Sean Hughes and Mike Pritchard (aka Mik Dirnt), in fact the video is credited to Luke Pritchard - guessing Mike's bro).
It's so wild to see such a young Billie Joe, and I gotta say, even at age 16 he had rock star swagger! Check out the video below