Tribute acts often take on the likeness of their subjects through costumes, makeup and mannerisms. The Bookends, an English duo composed of Dan Haynes and Pete Richards, take a more stripped-down approach in their homage to the 1960s folk-rockers Simon & Garfunkel. In Simon & Garfunkel Through the Years, Haynes and Richards forego themed threads and impressions in favor of note-for-note renditions of hits such as “Homeward Bound,” “Mrs. Robinson” and “Bridge Over Troubled Water.” Images, video footage and recorded interviews with Art Garfunkel and Paul Simon punctuate this dynamic theater experience.