Danny Goldberg was Led Zeppelin's publicist when the band ruled the world - and he was barely out of his teens. Later, after establishing himself as a top-flight artist manager, he helped usher in the alternative rock movement by guiding the all-too-brief career of Nirvana. In his new book, Bumping Into Geniuses, Goldberg recounts the incredible highs and crushing lows of his four decades in the music industry, and in this exclusive interview he shares many of those fascinating anecdotes. For more on Danny Goldberg and the best music news, reviews and tuition, head to www.musicradar.com.