A high-school gymnasium, cheerleaders in anarchy-logo tank tops and a mob of angry teens storming the court—few videos in rock history can match the visceral impact and game-changing revolutionary fervour of Nirvana's “Smells Like Teen Spirit”. But the band's gritty, grungy vibe would give way to Technicolor surrealism with “Heart-Shaped Box”, which vividly rendered Kurt Cobain's lyrical fascination with childbirth and bodily fluids.