Look who is singing his song with Peter, Paul & Mary back in the day! I must admit, I was excited when I first found this grainy video on You Tube. In the early days John Denver was on the folk music scene, playing in local venues and relatively unknown. "Leaving on a Jet Plane" was one of the first songs he wrote. Peter Paul and Mary liked the song and began performing it. It became one of their signature songs and reached number 1 on the Billboard charts. When they picked up the song, it also helped to launch Denver's career in the music industry.
Here they all are singing that song that PP&M made famous for John Denver.