"Welcome to the Machine" (7:26) by Roger Waters. Vocals by Gilmour and Waters.

Instead of jumping on Gilmour's back, you might want to acknowledge that Waters has his part in the vocals too.
Also, I think Waters'/Gilmour's vocals were purposely made to sound the way they do. Not to be over-dramatic, but I think they made their voices sound so desperate and sort of in pain, to express the mood of the great song.