I just want to raise a guitar-related question.
I assume most of you have, one time or another, heard a riff.
Now, I would like to hear your personal view on what a riff is. Give me your definition; What makes a riff be a riff? Where goes the line between a riff and a melody? Do you also consider melodies as riffs?
I used to consider riffs as i.e. the intro of Iron Maiden's 2 Minutes Two Midnight, for those who've heard that song.
When I think about it, Judas Priest's Breaking The Law has got a very distinct intro, however, with a slightly more melodic touch than the previous mentioned example. Now where goes the 'dividing line'? When is it a riff, and when is it a melody?
The intro of Eric Clapton's Layla is also a famous example. Quite melodic, yet, I'd call it a riff.
Most guitarists have played quite many riffs, however, I'm not sure that just as many has considered the definition of a riff.
Give me your opinions!