One of the musical of the seventies was disco.In fact it was more than just a sound.It was a new lifestyle-a new way of dancing and of meeting people. When the movie Saturday Night Fever came out in 1977,there was a disco explosion all over the world.Young people (and some not so young)dressed in brightly colored shirts or tops and denim jeans danced the night awary in disco the ques.Nik Cohn wrote in New York Magazine "The new generation takes few risks;it graduates,looks for a job,endures,And once a week,on Saturday night,it explodes.