#2
Do you mean the bit where a guitar starts playing a melody over the guitar parts that are already playing? About 30 seconds in (give or take; the links not working for me)? If so, then yes, delay.
#3
Yeah sorry the guitar that comes in a 25 seconds.

So it's delay then, sure about that ?

Damn. I only have tremolo DAMNNNNNED
#5
Ugh! Thanks for answering anyway at least I know what to get.

Delay is very cool, I would love to play that!