This captures the May 21 show in Houston, Texas from Led Zeppelin's 1977 North American Tour, the largest-scale tour in the band's history. A full recording of three hours of intense performance. This captures the show at The Summit in Houston, Texas, on May 21, from Led Zeppelin's 1977 North American Tour. At this point Zeppelin's popularity was at its peak, but at the same time the band had grown so large that things were becoming difficult to control, and they found themselves facing all kinds of trouble. The tour undertaken amid these circumstances was the largest ever, planned mainly around stadium shows, and multiple-night stands were scheduled in several major cities, including New York's Madison Square Garden, with a total of 51 shows planned, all of which sold out. However, after 44 shows had been completed, the death of Robert Plant's son Karac led to the remaining 7 shows being canceled. In addition, the start of the tour had already been pushed back a month due to Plant's laryngitis, and by the time this happened the equipment had already been shipped to the United States, leaving the band without their instruments on hand and causing problems with rehearsal. On top of that, drug use within the band was said to be severe during this period, which likely affected the performances as well, with Jimmy Page in particular showing this tendency noticeably. A feature of this tour was the addition of an acoustic set in the middle of the show, for which John Paul Jones used a custom-made acoustic guitar combining 6-string, 12-string, and mandolin necks in one instrument. This was also the tour on which Page wore his now-famous silk suit decorated with flowers and a dragon. This May 21 Houston show falls in the middle of the tour's schedule, and while an official record exists that it was filmed, the footage remains unreleased to this day. Since a great many recordings survive from this 1977 tour, it can be interesting to compare different versions. Naturally, a must-have for fans.