number of the concert on the tour (such as "1–5!" for the fifteenth show) so recordings of the shows would be easy to distinguish from each other. The second half of the show comprised the Wish You Were Here album in its exact running order ("Shine On You Crazy Diamond (Parts I–V)", "Welcome to the Machine", "Have a Cigar", "Wish You Were Here" and "Shine On You Crazy Diamond (Parts VI–IX)"). This was the first time "Welcome to the Machine" and "Wish You Were Here" were played live, with the latter being played differently than the studio album. It featured an extended guitar solo, a reprise of the second verse and Richard Wright closing the song with a piano solo. The encores were "Money" and often "Us and Them" from The Dark Side of the Moon. At the Oakland, California show on 9 May they played "Careful with That Axe, Eugene" as a second encore, the first time it had been played since 1974 and the last time it was ever performed. During the tour, Waters began to exhibit increasingly aggressive behaviour, and would often scold disruptive audiences who lit off fireworks, and yelled and screamed during the quieter numbers. In the New York shows they had to use local workers as lighting technicians due to union problems with their own crew. They had several difficulties with the workers; for example, Waters once had to beckon one of the spotlights to move higher when it only illuminated his lower legs and feet while he was singing. The final night of the tour on 6 July at Montreal's Olympic Stadium ended with Pink Floyd performing a second encore of "Drift Away Blues" as the roadies dismantled the instruments in front of the insatiable audience who refused to let the band leave the stadium. David Gilmour sat out the final encore as he was unhappy with the band's performance that night. Snowy White played a bluesy guitar solo in Gilmour's place. A small riot at the front of the stage followed the band's eventual exit. Earlier that night, Waters spat in the face of a disruptive fan; The Wall grew out of Waters' thoughts about this incident, particularly his growing awareness that stardom had alienated him from his audience. "It was a funny gig," recalled guitarist Snowy White. "It was a really weird vibe… I used to just do my job. But