Are the msg '73 shows the only shows led zep professionally filmed themselves? Meaning they hired a film crew, not just in-house crews like seattle and knebworth (not sure if earls court is in-house or not). Doesnt that seem weird if thats the case? By the mid-late 70s youd think they'd wanna preserve some of these shows just for themselves, not even to release commercially. They could certainly afford to, it just seems like such a waste they didnt film more stuff. Even studio sessions, it would be fascinating to see them in the studio. They knew what an amazing band they were, its just surprising they wouldnt document more stuff along the way, again not for commercial reasons but just for themselves.