Just over 15 years ago, FM radio gave the presentation of rock n roll its first alternative. No longer did one have to sit through a zillion pimple cream commercials and suffer through 10 drecky ballads to hear the one Beatles, Yardbirds or Byrds tune that occupied the Top Ten. FM radio, the original stations like KSAN in San Francisco and WOR-FM in New York, played the good stuff all the time.