Photo of the crowd at Balboa Stadium for a 1975 concert by Fleetwood Mac, Loggins and Messina, Rod Stewart and Faces, and Lynyrd Skynyrd. General admission lawn seats were $7.50. With a capacity of 34,000, Balboa Stadium was a popular 1975 venue. Other concerts that year included The Beach Boys with Jessie Colin Young and Pure Prairie League, and The Allman Brothers Band.