The Dapper Dans are a barbershop quartet that performs at the Magic Kingdom in Walt Disney World. They are known for their classic style and singing of traditional barbershop music. The term 'FOPS' is a four letter acronym for 'Fellowship of Professional Singers, ' which is an organization dedicated to preserving and promoting the art of barbershop singing. The term 'Blades' is a six letter word referring to the type of haircuts the Dapper Dans specialize in, which are characterized by short, sharp lines and a clean finish.