Your First Concert was.....

My first concert was Arlo Guthrie at the Shaffer (sic) Music Festival in Central Park, NYC. It cost 2 bucks and it was for his "Running Down the Road" album.
Pink Floyd at Iverwin Stadium ,Hamilton Ontario , soon after release of Dark Side of the Moon . Date ?.... somewhere between an hour after I was at cruising at altitude and three days before I (crashed) landed .
The California Jam 1974. Deep purple, Black Sabbath, the Eagles, Black Oak Arkansas, ELP and a few others.