T.N.T.

T.N.T.'s harmony is a masterclass in hard rock minimalism. The song operates with just three power chords — E5, G5, and A5 — yet achieves maximum impact through their strategic placement. The verse's single-chord foundation builds tension that the chorus releases with the blues-borrowed bIII movement. The omission of major or minor thirds in the power chords creates a deliberately raw, ambiguous tonality that is central to AC/DC's sound. The blues influence is unmistakable in the bIII chord and the pentatonic-based vocal melody.

T.N.T. was a collaborative effort between the Young brothers and vocalist Bon Scott, capturing the explosive, larger-than-life persona that Scott embodied on stage. The lyrics channel a defiant, unstoppable energy — Scott portraying himself as dynamite, a figure too powerful to contain. The song's riff, built on a driving E power chord pattern, emerged from the band's relentless rehearsal and live performance schedule across Australian pub venues.

Released on AC/DC's 1975 Australian album of the same name, 'T.N.T.' became one of the band's defining songs with its primal E-string riff, Bon Scott's swaggering vocals, and the unforgettable 'Oi! Oi! Oi!' chant. The track distills the raw energy of mid-70s Australian hard rock into a compact anthem that helped launch AC/DC onto the world stage.