A capella quartet

Cantabile copy

Peggy Revell

A cappella group “Cantabile—The London Quartet,” took to the Townshend Theatre stage Friday evening for the second “Tour de Fort” concert of the 2010-11 season. Comprised of Michael Steffan, Mark Fleming, Steven Brooks, and Richard Bryan, the quartet serenaded the crowd with songs from the 16th century up to present-day tunes.