Angus Young has identified "Back in Black" as the AC/DC track that instantly captures the essence of the band, crediting its opening single guitar note as the perfect distillation of their sound. The remark speaks to how AC/DC's identity remained remarkably consistent across the transition from Bon Scott to Brian Johnson, with the band favouring visceral, groove-driven rock over sentimentality even as their lyrical focus shifted slightly under the new singer.

Young revealed that his brother Malcolm nearly scrapped the song's iconic riff for being too simple, but Angus insisted its directness was exactly what would make it leap out of speakers. He described the track as starting with "one big punch with one big guitar," calling it the moment listeners instantly understand "what AC/DC is all about." The song, written as a tribute to Scott following his death, remains one of the most recognisable guitar riffs in rock, often cited as a rite of passage for guitarists in music shops worldwide, even as hardcore fans point to deeper cuts like "Beating Around the Bush" as more technically impressive.