Anything on synth out of Germany....German synth bands are really hypnotic.....
the description is a bit vague but you can google "guitar effects, david gilmour" and find it. use the tabs in some of the sites to narrow down exactly where in the song it occurs, and then you can join a forum.to ask the question more specifically
I loved omd, I went to see them in 1984, other bands from that era include Human League, Ultravox, Soft cell, Gary Numan and Kraftwerk, All were into synth.