A man dances as he is hosed with water at the Do Lab at the Coachella Valley Music and Arts Festival in Indio, California. The Coachella festival, which commenced in 1999 on the desert lawns of the Empire Polo Club in Indio, California, has grown from 25,000 attendees initially to 75,000 people a day over the three-day weekend, and has become an important platform for alternative rock, rave and electronic music acts.David McNew/REUTERS