This is a cover of Shine On by Pink Floyd. David Gilmour experimented with this technique during his 2006 On And Island tour. Later in the tour he used wine glasses instead.
Click Here to see how to set up the Sound on Sound: • How To Set Up David Gilmour Sound On Sound...
Guitar & Amp:
Black Strat fitted with Fat 50, CS69, SSL-5 pickups
Reeves Custom 100
Sound on Sound:
My volume pedal has 2 outputs. When the pedal is at the heel position, it outputs full volume to A and nothing to B. Toe position is the opposite. From B I have a delay pedal set up for really long delays. So I can play a chord, fade into channel B, and then that chord will be sustained for a while while I play over top of it on channel A.
Signal Chain:
Fat 50 neck pickup
MXR Dynacomp
Volume Pedal (to A and B)
A:
Boss DD-20 Delay Unit set at 370ms
Reeves Custom 100 amp
B:
Digitech Digital Delay
Orange Practice Amp