PF formed in 1965 when Syd Barrett, Bob Close,
Rick Wright, Nick Mason, and Roger Waters joind
some band called Sigma 9.
Dave Gilmour joind as a replacement to Syd who
was heavily involved into LSD and was having
trouble dealing with all the pressure of being
a star (before 1969).
In 1983 Roger quit the team, and Dave took the
leadership of PF.
They played together many albums and concerts, like,
Delicate sound of thunder, Division bell, and pulse.
Roger Waters played The Wall -- live at Berlin in 199[45].
Their last concert, was Is There Anybody Out There? The Wall Live 1980-81
in 2000.
I actually heard about a concert called P3 somewhere in
the net, but I can't confirm that.