Few rock singers of the alternative era were as original or as instantly unforgettable as Thom Yorke, and his band Radiohead became one of the biggest acts of the 1990s and 2000s for their challenging and unpredictable music. Early on, Yorke rarely worked outside the group, but he steadily collaborated with a variety of artists, released several low-key solo albums, and briefly led another band, the Afro-beat-inspired Atoms for Peace. Throughout, he worked closely with Radiohead producer Nigel Godrich.