Dark Side Of The Moon lyrics

"I've been mad for fucking years, absolutely years, been
over the edge for yonks, been working me buns off for bands..."
[ Lyrics from: http://www.lyricsmode.com/lyrics/p/pink_floyd/dark_side_of_the_moon.html ]
"I've always been mad, I know I've been mad, like the
most of us...very hard to explain why you're mad, even
if you're not mad..."

(Instrumental)