This is the guitar solo from Pink Floyd: Live at Pompeii, the Director's Cut.
the solo comes in right after the drums before the chorus.

e]---------------------------------------------------------
b]---------------------------------------------------------
G]----------------------------------13bbbbbbb--------------
D]------------------------------12-------------------------
A]—5-4-5--7-9—5/10vvvvvvv----------------------------------
E]---------------------------------------------------------

e]---------------------------------------------------------
b]—13p12---------------------16b-16-15vvv—----15b-15—14----
G]------12-------------12----------------------------------
D]--------12vvvv-------------------------------------------
A]---------------------------------------------------------
E]---------------------------------------------------------

e]---------------------------------------------------------
b]-16b16vvv----18b18-16—18b18----13b13-11vvvv--------------
G]---------------------------------------------------------
D]---------------------------------------------------------
A]---------------------------------------------------------
E]---------------------------------------------------------

This tab is not in the recorded version of Brain Damage, but i tried it with 
the dark side album and it sounds great.