Below, check out a very interesting clip of AC/DC's Angus Young—sitting with a well-worn acoustic guitar—as he discusses the roots of the band's 1976 tune "High Voltage."
The song is a chunky rocker in the key A, but it seems that wasn't just an accident.
"[I thought] it'd be cool if we had a song that had the chords A, C, D, C in it," Young says in the video. "So we more or less threw it together, and I had this 'high voltage' chant I was singing. Phil, the drummer, felt it was rather corny, but it paid the rent."
Actually, the chorus is A to C to D to A, but they made their point. You can watch a high-quality lesson video at the bottom of this story; it shows what Malcolm Young is playing on the song.
The top clip is from Episode 4 of a DVD called Long Way to the Top, which is basically a history of Australian rock and roll—with a few New Zealand bands included in the mix. Enjoy!