Watch the Gilmourish online guitar lesson by Jeff McErlain from Soloing the Changes
David Gilmour is one of the masters of the perfect guitar solo. I see his solos as two different types and "Comfortably Numb" is a perfect example of what I mean. The first solo is extremely melodic and an integral part of the song. If you play the song, you must play that solo. It's like the vocal melody - it's not the song without it. The end solo is more bluesy with an improvised looser feel. To be clear, Gilmour composes all his solos.