For more than fifty years, AC/DC has treated reinvention as a distraction and the electric guitar as a public utility. The result is a catalogue built to survive changing singers, changing decades and almost every fashion that passed by.
What began as a one-night Los Angeles prank became a 40-year argument between funk, punk, melody and nerve. The surprise is not that the Chili Peppers survived the friction - it is that the friction became their sound.

He left Aston with a factory worker’s vowels and returned as the voice that helped give heavy metal its shape. Between those two points came reinvention, family television, festival economics and one final, wonderfully circular night at Villa Park.

A six-day solo recording became a 30-year rock institution. The useful secret was never reinvention for its own sake, but the stubborn decision to begin again - loudly, together and in public.

Three friends carried an East Bay racket from a volunteer-run punk club to stadiums, Broadway and the national archive. The trick was never staying young. It was keeping the argument alive.