Saw Kansas i 1983 for free including backstage passes. Friend of a friend of the band
We had a teen club in Dayton,OH called The Caverns located in the lower level of a shopping strip.
The stage was 12” high so the performers were “right there”.
For $1, I saw Hollies (w/Graham Nash), Simon&Garfunkel among others.
The warm-up group for S&G was a local teen band McCoys led by the the VERY talented guitarist/singer Rick Zehringer who had a hit with “Hang On Sloopy”.
The McCoys stayed on stage and was the backing band for S&G.
A short time later, Rick Zehringer left the group, moved to LA, changed his last name to Derringer and immediately became a highly accomplished session guitarist playing on Steely Dan albums among others.