It's an unmistakable sight: The bowties, the striped vests, the straw boater hats. And the sound is equally unmistakable: Four-part harmony and songs like "Sweet Adeline."
It's the sight and sound of barbershop singing, which somehow continues to flourish in this age of downloadable music and digitally altered voices. It's been flourishing here on the North Shore since 1948 with the Beverly-based Northshoremen Barbershop Chorus.
Barbershop-style music is one of only "two art forms that are truly American," says 75-year-old singer Jack Dowd of Salem, Mass., who is one of the group's vice presidents. The Northshore Men are a member-organization of the Barbershop Harmony Society, a worldwide organization that was founded in 1938, and is the largest all-male a capella singing organization in the world.