On August 21, 1976, Lynyrd Skynyrd took the stage at Knebworth Park in England as part of a daylong festival. With Ronnie Van Zant on vocals and the Rossington/Collins/Gaines triple guitar attack, Lynyrd Skynyrd delivered an electric performance in front of a crowd estimated between 150,000 and 200,000, which has gone down as one of the band's greatest performances. The Blu-ray also contains the feature-length documentary If I Leave Here Tomorrow: A Film About Lynyrd Skynyrd. CD + Blu-ray.