I think it is because it contains a sound that no one but the Floyd could ever create . . .

and now I don't know what to say after my truely wonderful statement . . . yeah

__________________
Dizzy in the head And I'm feelin' blue
The things you said, Well maybe they're true Gettin' funny dreams
Again and again I know what it means, but Can't explain I think it's love Try to say it to you, When I feel blue, But, I can't explain.
-The Who