“Back in Black” was written by Angus Young, Malcolm Young and Brian Johnson as a tribute to AC/DC's former lead singer Bon Scott, who died in February 1980. Rather than creating a mournful song, the band wanted to celebrate Scott's life with something powerful and triumphant. The track became the title song of AC/DC's seventh studio album, produced by Robert John “Mutt” Lange and released later that year.
Although “Back in Black” was not initially a major singles-chart hit in the US, the album became a monumental commercial success and eventually one of the best-selling albums in music history. The title track has since become one of AC/DC's most recognisable songs and one of the defining anthems ofrock. Malcolm Young originally used the famous opening guitar riff as a warm-up exercise before it evolved into the foundation of the song.
The iconic riff of AC/DC's “Thunderstruck” began as a simple guitar practice exercise. Angus Young was playing around with an acoustic guitar at home when he stumbled upon the distinctive pattern, recorded it on a cassette and later showed it to his brother Malcolm Young. Malcolm immediately heard its potential and encouraged Angus to develop the idea into a song.
The intro is played entirely on the B string, alternating fretted notes with the open string. To achieve the exceptionally clean sound on the recording, Angus taped down all the other strings so they could not ring out, a studio trick he had learned from his older brother George Young. The humble practice lick eventually became the opening hook of “Thunderstruck,” released on AC/DC's 1990 album The Razors Edge.