Album - Powerage
Song - So many great ones, but I'll stick with one from Powerage - "Down Payment Blues".
I could certainly pick "Let There Be Rock" based on this from the liner notes of the remastered version of the album:
Angus set the tone and led the sessions by example during the recording of the rock 'n' roll history lesson that is the album's title track. His amplifier caught fire midway through but under frantic instructions from George [Young] he continued playing. By song's end the amp head was a smoldering puddle of wiring and valves and Angus' guitar had absorbed part of his tiny body weight in sweat.