Let's be honest all guitarist love soloing over a great chord progression! Though occasionally we come across that old chestnut which is a one chord vamp, which limits the harmonic structure some what! Personally I have always found soloing over just a single chord tricky, because it forces you to really think about your approach to improvising and how you can make yourself sound as interesting as possible. A great example of soloing over a one chord vamp is 'Superstition' by