An impromptu supergroup of-sorts was formed in New Orleans at the weekend, when Pearl Jam were joined by members of two other well-known bands during their set at the New Orleans Jazz Festival.

Eddie Vedder and co. invited Red Hot Chili Peppers' guitarist Josh Klinghoffer and drummer Chad Smith, as well as Kings of Leon drummer Nathan Followill on stage to partake in their cover of Neil Young's 'Rockin' in the Free World'.

You can watch the performance below: