DOVER- The Art Mob, an a capella singing group from New York City, will return to the Dover Town Hall on Saturday, June 2, at 7 pm, for its third annual concert to benefit the Dover Free Library.

The concert will be a reprise of the “Flash Mob” program that the group recently performed at three concerts in Manhattan.

In keeping with the theme, the program includes songs about love sparks, flashing swords, a flashy dresser, the moon and the stars, sunlight, and explosions.

Like all Art Mob concert programs, this one features mostly obscure music spanning two or three centuries and an array of genres, including jazz, long-forgotten Broadway show tunes, radio gospel, novelty numbers, and folk music.

Art Mob concerts always include a few shape-note songs, which use a simplified kind of musical notation that dates back to the community sings that were popular in the 1800s.

Art Mob members write the a capella arrangements for many of the songs the group sings. Some of the shape-note songs feature music by Art Mob bass Aldo Ceresa, with words written a century or more ago. Ceresa, a book dealer by trade, has taught and led shape-note singing throughout the United States and Europe.

The Art Mob, which has been making music since 1979, presents two three-performance concert series every year in Manhattan (in May and December), plus occasional benefit concerts. Its musical director is Brent Frederick, who conducts and plays keyboard for Broadway shows, other New York venues, and regional theater. Frederick’s arrangements and music direction are featured on several Royal Caribbean cruise ships.

In addition to Ceresa and Frederick, the group includes sopranos Constance Beckley, Kirsten Skrinde, Nancy Moore Simpson, and Ruby McNeil; basses Dean McNeil and Martin Donach; tenors Dan Rosenbaum and Frank Donno; and altos Gaynor Coté, Vicki Watson, Confidence Stimpson, Hannah Campbell, and Cheryl Morrison, who is a part-time resident of East Dover and a member of Friends of the Dover Free Library.