#1
So, I was listening to Black Sabbath, and listened born again, what effect is used to create that first riff, link below.

https://www.youtube.com/watch?v=FMw6ldKEjp4

From 0:00 to 2:02

I downloaded the guitar pro tab, and it said it was just an acoustic steel guitar but I'd like to know if there's something more to it.

Thanks in advance