He has sold over 40 million albums. He's been in bands that have changed popular music forever. He's the nicest guy in rock. In 1990, little-known punk-metal upstarts Nirvana added a new drummer to the band. They were soon to become a global phenomenon - but as we all know, things went wrong. Defying expectations, a knack that was soon to become his trademark, Grohl refused to see it as the end. In 1995 his new band, the Foo Fighters, rose to join the pantheon of rock deities. The 'wonder years' were by no means calm. The celebrity status, the vilification by his critics and his high-speed lifestyle proved a dangerous cocktail. Grohl has been through some of the darkest lows and most dazzling highs that life can offer. Dave's feelings about these events have never fully been revealed to the public. Paul Brannigan, his friend and confidant, now brings to light this unique portrait of Dave Grohl: the man who changed music forever.