David Gilmour launched the "Momentary Lapse of Reason" tour today in 1987 in Ottowa...Roger Waters had threatened lawsuits, trying to prevent the name "Pink Floyd" from being used without him in the band, as he had left 2 years earlier...Roger lost his lawsuits and then settled out of court...Pink Floyd carried on (extremely $ucce$$fully) without Roger Waters in the line-up..."The Momentary Lapse Tour" played Pittsburgh in late May 1988, Three Rivers Stadium...youtube