 Some Barbershop arrangements have elaborate tags featuring a long hanger, and the hanger is usually sung at a high volume (fortissimo in musical terminology).The best singers in Barbershop quartets at the highest level of competition can sing hangers that can be upward of 20 seconds long.The combination of the one note, held long and loud, and the other three voices singing various creative harmonies around that one note, is one of the most thrilling aspects of Barbershop music.