Rodgers, who is in the middle of his Free Spirit tour, in which he is doing the songs of Free, his band before Bad Company, welcomed the two singers for an encore of Barrett Strong’s 1959 classic “Money.”
Plant is an old friend of Rodgers as Bad Company were signed to Led Zeppelin's Swan Song Records, and, Plant was recently a guest on Johnson's British TV show, A Life on the Road.
Sunday's appearance was Johnson's first time on stage since leaving AC/DC last March due to hearing issues.
On Saturday, Johnson's replacement in AC/DC, Axl Rose, joined Billy Joel on stage in Los Angeles, something Johnson also did in 2014 and '15.
Source: fb/paul rodgers