On May 12, 2011, old Pink Floyd bandmates David Gilmour, Nick Mason and Roger Waters performed together at the London 02 Arena during Waters' The Wall tour for the songs "Comfortably Numb" and "Outside The Wall." At the time, the three had not played together since a Live 8 show in 2005 with the late Floyd keyboardist Richard Wright (1943-2008).
The special appearance by Gilmour in May 2011 was especially rewarding for Floyd fans, for many reasons, And Gilmour's guitar solos in "Comfortably Numb" that night were as intense as ever (watch above) and emphasized the special moment of the Gilmour/Waters pairing.
Drummer Nick Mason watched on the side of the stage during "Comfortably Numb" and then came onstage for "Outside the Wall" to play tambourine.
Mason admitted that all three were a bit nervous getting together to perform and met for lunch beforehand to "chat about everything."
Mason explained afterwards that he was open to the three of them performing together again. However, Gilmour and Waters remain at odds with many things involving Pink Floyd. The diplomatic Mason is close friends with both and has collaborated with Gilmour on many occasions since that 2011 concert, including.what seems to be Floyd's swan song album Endless River in 2014.