I had to listen twice. Was that one chord? Sounded like it to me but I thought I heard a little change creep in about half-way. Not sure, but hey! nice vibrato. ----------
Thanks Tooka. There's a four-bar intro which stays on the one chord and after that it's all 12 bar blues. And the background clatter is my son playing with lego - a sound I'm definitely starting to associate with the blues.