<P> Things got extended a lot to keep ourselves from going mad . Every tour we tried to cut it down, especially in the later years . We'd say we're only going to play an - hour - and - a-half . After a week, it would creep back up to two hours . By the end of the tour it's three hours! </P> <P> During the 1977 tour of the U.S., Peter Grant's 11 - year - old son Warren was physically assaulted by promoter Bill Graham's right - hand man Jim Matzorkis . As a result, from that time onwards, the band refused to allow family members to join them on tour . After their 1977 tour of the U.S.--their last major tour--the band chose to abandon much of the "mystical" image that surrounded them up to that point . Instead members would wear ordinary street clothes during their concerts and the setlist was toned down by excluding long, elaborate solo numbers like Bonham's "Moby Dick" and Page's trademark bowed guitar solo accompanied by a laser show . </P> <P> Many of the band's shows have been preserved as Led Zeppelin bootleg recordings, which continue to be prized by collectors and fans . In addition, footage of Led Zeppelin concerts has been released officially on the band's 1973 concert film The Song Remains the Same, and on the Led Zeppelin DVD (2003). However, unlike other artists of the era such as The Who and The Rolling Stones, comparatively little official concert footage exists of Led Zeppelin . This is largely because of the successful efforts of manager Peter Grant to limit the exposure of the band to television appearances, in order to encourage fans who wanted to see the band to attend Led Zeppelin concerts . Of the few professionally shot concerts the band did, (excluding their July 1973 concert at Madison Square Garden on The Song Remains the Same) six are today available to fans through bootlegs . These concerts include the last two nights of their five - concert run at Earls Court Arena in London in May 1975, their show in Seattle's Kingdome in 1977 and their two shows at Knebworth in August 1979 . In addition to these, their Royal Albert Hall performance from January 1970 is available . </P> <Table> <Tr> <Td> <Ul> <Li> September 1968--Scandinavian Tour 1968 </Li> <Li> October--December 1968--UK Tour 1968 </Li> <Li> December 1968 - February 1969--North American Tour 1968--1969 </Li> <Li> March--April 1969--UK and Scandinavian Tour 1969 </Li> <Li> April--May 1969--North American Tour Spring 1969 </Li> <Li> June 1969--UK Tour Summer 1969 </Li> <Li> July--August 1969--North American Tour Summer 1969 </Li> <Li> October 1969--European Tour Autumn 1969 </Li> <Li> October--December 1969--North American Tour Autumn 1969 </Li> <Li> January 1970--UK Tour 1970 </Li> <Li> February--March 1970--European Tour 1970 </Li> <Li> March--April 1970--North American Tour Spring 1970 </Li> <Li> June--July 1970--Tour of Iceland, Bath & Germany 1970 </Li> <Li> August--September 1970--North American Tour Summer 1970 </Li> <Li> March--April 1971--United Kingdom Tour Spring 1971 </Li> </Ul> </Td> <Td> <Ul> <Li> May--August 1971--European Tour 1971 </Li> <Li> August--September 1971--North American Tour 1971 </Li> <Li> September 1971--Japanese Tour 1971 </Li> <Li> November--December 1971--United Kingdom Tour Winter 1971 </Li> <Li> February 1972--Australasian Tour 1972 </Li> <Li> May--June 1972--North American Tour 1972 </Li> <Li> October 1972--Japanese Tour 1972 </Li> <Li> October 1972 - January 1973--UK Tour 1972 / 1973 </Li> <Li> March--April 1973--European Tour 1973 </Li> <Li> May--July 1973--North American Tour 1973 </Li> <Li> January--March 1975--North American Tour 1975 </Li> <Li> May 1975--Earls Court 1975 </Li> <Li> April--July 1977--North American Tour 1977 </Li> <Li> August 1979--Two warm - up concerts in Denmark and Knebworth Festival 1979 </Li> <Li> June--July 1980--Tour Over Europe 1980 </Li> </Ul> </Td> </Tr> </Table>

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