David Gilmour - short and sweet, 1978

"the song "Short and Sweet" can be seen as a musical precursor to "Run Like Hell" (also from The Wall), with its shifting chords over a D pedal point, using a flanged guitar in Drop D tuning. "Short and Sweet" was written in collaboration with Roy Harper, who recorded a version, on which Gilmour played, for his 1980 album The Unknown Soldier."