August Jam was an outdoor concert held on Saturday, August 10, 1974, at the Charlotte Motor Speedway outside Charlotte, North Carolina, in the United States. The concert promoter was Kaleidoscope Productions and it was sponsored by radio stations WAYS and WROQ. The concert featured The Allman Brothers Band, Emerson, Lake & Palmer, Foghat, Black Oak Arkansas, The Marshall Tucker Band, The Ozark Mountain Daredevils, PFM, Grinderswitch, and others. The Eagles were booked to play but cancelled. It was the largest concert ever held in the state of North Carolina and one of the largest in the U.S. at that time, with an estimated attendance in excess of 200,000.