If nothing else, the 21st century has given the public quite a bit of musical gum to chew on. Girls swoon over new boy bands like the Backstreet Boys; boys are all agog over young females like Britney Spears. Country music is more pop than ever and rap is all the rage. Rock Well, the arenas, theaters, clubs and smaller-than-stadium venues continue to be populated by bands popular decades ago. Stars of the 60s and 70s fill the ad pages bugling tours coming your way. Many of them are sporting not long-haired images of psychedelia but short, white or gray hair. Spinal Tap has applied for Social Security. Continue...