Koz, speaking about opening riffs, how about "Aimee", Pure Prairie League!
The last concert I paid to see was: Charlie Daniels Band, New Riders of the Purple Sage, and Molly Hachet (first album)...the lead G for MH came out and jammed with CDB on "The South's Gonna' do it Again"! $6.50 general admin... 8)
Sorry...I forgot...the last concert I paid to see was the Kiss reunion tour (the first one) at the Fleet Center... 8)