The college stations kicked in at various points. Some offered BBC reports from Jamaica, Mali, the Netherlands, Brazil and other locales most Americans cannot find on a map. Others played music by undiscovered alternative musicians who should probably stay undiscovered. The bad music was, at least, distinctive. On the pop stations, homogenization was really in evidence. Interchangeable divas -- was that Beyoncé or Mariah Carey? -- sang interchangeable songs with bland "I want you, baby, I need you, baby" lyrics.