The REO concert I'm thinking of was in spring (or maybe late winter) of '81. I was still in high school in fall '79... my freshman year at OU was 80-81 and that was when Blue Oyster Cult, Molly Hatchet, and REO played in the Convo.
I think your memory is spot on, Athena. That show was late winter/early spring and the High Infidelity record was #1 in the nation. BTW -- The guys in the band and some of the crew hung around Athens for a few hours afterward and play basketball (among themselves) over at Grover Center.
Bobcatsquared was right about having three Convo shows during fall 1979. They were headlined by Styx, Kansas and Foreigner.The only other Convo show that academic year featured Waylon Jennings with Buddy Holly's Original Crickets opening up. Also brought to town by the Pop Concert Committee that academic year were The Bar-Kays with BSCPB, Southside Johnny and the Asbury Jukes and Marcel Marceau.