by Bungalow Bill, Contributing Writer In the early sixties there were many kinds of popular music in the Top 40, and none of them were rock. Straight pop tended toward sentimentality and appealed to the norms of a society at ease. The charts were still full of old-fashioned adult “tunes” like Louis Armstrong’s “Hello Dolly” and Lawrence Welk’s “Calcutta.” Teens danced to infectiously polite rhythm and blues (R&B) like “The Shoop Shoop Song,” and played surfing songs and teen ballads on the jukebox. Then there was folk music–sincere, straight, and sung in behalf of “the people.” Peter, Paul & Mary made…