The term 'Disco Style' refers to a type of dance music and fashion popularized in the 1970s. The two crossword solutions, GOGO (4 letters) and AGOGO (5 letters), are both related to this style. GOGO is a type of dance characterized by frenetic movements and often performed in nightclubs. AGOGO is a type of percussion instrument consisting of two or more bells of different sizes, which is often used in disco music.