According to guitarist Angus Young, AC/DC have a “mountain” of unreleased songs and song ideas. Even after Power Up finally sees the light of day, a library of AC/DC jams — which was maintained by Malcolm Young — still hold countless pieces of never-before-heard history from the Australian band.
Young spoke about AC/DC’s labyrinth of ideas during an interview with Radio.com. “Oh yeah. If I went through [all the boxes], there’s a lot of ideas that were [recorded] through our career,” the guitarist said.