This is a telling thing: The only song featured on the Spencer Davis Group's MySpace page is "Gimme Some Lovin'." A Top 10 hit. In 1966. Sung by Steve Winwood. Who left the group in 1967. By the way, in case you didn't know, Spencer Davis plays guitar. He's 67 years old. Lives in California. Tours incessantly. Mon., May 12, 7:30 p.m., Largo Cultural Center, 105 Central Park Drive, Largo, $32, 727-866-5167.

Eric Snider is the dean of Bay area music critics. He started in the early 1980s as one of the founding members of Music magazine, a free bi-monthly. He was the pop music critic for the then-St. Petersburg...