Every rock guitar player looks for the perfect little musical phrase that should provide the rhythm and personality of the song. There are riffs that, once you've heard the song, never leave your memory. There are very simple riffs, of only two notes and there are also complex, deliberated riffs. Some guitarists are remembered for only one riff, others were true riff factories. I listed only those that got sticked to my mind. The selection is personal so you can suggest your own choice at Contact.