U2

Out of Dublin's Artane neighborhood in 1976, four schoolmates — Bono, The Edge, Adam Clayton, and Larry Mullen Jr. — started jamming together under a series of names before settling on U2. What's remarkable is that none of them could really play when they started, but that raw ambition pushed them to develop a sound that would eventually conquer arenas worldwide. The Edge's chiming, delay-soaked guitar work became the band's sonic signature, while Bono's earnest, soaring vocals polarized listeners — you either love him or find him insufferable, and both camps have valid points.

Musically, U2 built their reputation on anthemic post-punk and alternative rock, evolving from the angular urgency of Boy and War through the atmospheric grandeur of The Joshua Tree, arguably one of the most important rock albums of the 1980s. They kept reinventing themselves — Achtung Baby pulled them into industrial and alternative territory, while later records like How to Dismantle an Atomic Bomb showed they could still write killer rock songs when motivated.

Culturally, U2's footprint is enormous. They turned rock concerts into stadium-scale political theater, championed causes from Irish politics to African debt relief, and influenced generations of bands chasing that same epic, emotionally charged sound. Love them or not, dismissing their impact on rock's landscape simply isn't an option.