The term 'Does Barbershop Work?' can be answered with the crossword solution of 'SINGS'. This is because barbershop singing is a style of a cappella music that originated in the United States in the late 1800s. It is characterized by four-part harmony and often includes a bass line, tenor, lead, and baritone. Barbershop singing is still popular today and is performed in many different settings, from small groups to large choirs.