It's very easy for people like me who have been alive only a bit longer than the band has existed to take this group for granted. This film makes clear that this is a mistake. Led Zeppelin's music has always just been there and, for several decades, has usually be heard on substandard sound systems. I honestly hadn't given it a serious listen in years.
The live situations shown in the movie demonstrate that this band's performance level was second to none and, in my mind, puts an end to the debate over who rocks greatest drummer is. They were playing rock, but the level of communication onstage is more like jazz. These guys had huge ears and didn't miss a note of what the others were doing. Truly inspiring musicianship. I saw this in IMAX format, which was great because this is music that is supposed to be played loud.
What I liked most about the film was the band itself. During their early years, the lads avoided all the pitfalls recounted in most music biopics. The surviving members are lovely modest gentlemen who seem to still be friends just like they were at the beginning. In all the old photos, everyone is smiling. No monster egos, just clarity of vision, surpassing skill, lots of hard work and preparation, and very solid business sense: a triumph by people who knew what they were doing.
I left feeling refreshed.