Never forget Southern Rock - Lynyrd Skynyrd, Marshall Tucker Band, Allman Brothers, Outlaws, Molly Hatchet, Little Feat, .38 Special, Black Oak Arkansas, Georgia Satellites, Atlanta Rhythm Section... to name a few. These brought the cliques of the kickers & the dopers together during the 70's & early 80's.
Now, Monica, these were concerts where the cowboy-hatted met the tie-dye T-shirt/tank top. Blue jeans were always chic, except at the open air stadium (in my case Mile High) where cut-offs & ice chests were the staple.