<P> "...local authorities in Monterey were starting to get cold feet over the prospect of their town being overrun by hippies . To smooth things over, Phillips wrote a song, "San Francisco (Be Sure To Wear Flowers In Your Hair)." </P> <P> Phillips reported writing the song in about 20 minutes . </P> <P> The song, which tells the listeners, "If you're going to San Francisco, be sure to wear some flowers in your hair", is credited with bringing thousands of young people to San Francisco, California, during the late 1960s . </P> <P> Released on May 13, 1967, the song was an instant hit . By the week ending July 1, 1967, it reached the number four spot on the Billboard Hot 100 in the US, where it remained for four consecutive weeks . Meanwhile, the song rose to number one in the UK Singles Chart, and most of Europe . The single is purported to have sold over seven million copies worldwide . In Central Europe, young people adopted "San Francisco" as an anthem for freedom, and it was widely played during Czechoslovakia's 1968 Prague Spring uprising . </P>

Who sang if you come to san francisco