"By the time we got to Woodstock, we were half a million strong." Those words, written by Joni Mitchell in her famous song about the event, perfectly captured the feelings about the music festival for those who were there. It was forty five years ago on August 15, 1969, that thousands of people gathered in rural Bethel, New York to attend what would become an historic outdoor concert. For those who attended - and even like Mitchell - those who could not, Woodstock became a defining moment. Richie Havens, Jimi Hendrix, Janis Joplin, Creedence Clearwater Revival, Santana, Neil Young, Jefferson Airplane, the Who and Crosby, Stills & Nash were just some of the musicians who performed that weekend.