jimharri
Moderator
If it is (either a single chord or a series of chords), and that is what I understand a riff to be, then from more recent-ish times;levets said:Is a riff a repeated chord?
[youtube]http://www.youtube.com/watch?v=zvoeeq-BH4w[/youtube]
Probably not the most difficult riff to master technically, but very effective in that it reels you in to the song from the opening second.