Madonna's discography is generally categorized as pop, electronica, and dance. Nevertheless, Madonna's first foray into the music industry was dabbling in rock music with Breakfast Club and Emmy. As the frontwoman of Emmy, Madonna recorded about 12–14 songs that resemble the punk rock of that period. Madonna soon abandoned playing rock songs by the time she signed to Gotham Records, which eventually dropped her since they were unhappy with her new funk direction. According to Erlewine, Madonna began her career as a disco diva, in an era that did not have any such divas to speak of. In the beginning of the 1980s, disco was an anathema to the mainstream pop, and Madonna had a huge role in popularizing dance music as mainstream music. Arie Kaplan in the book American Pop: Hit Makers, Superstars, and Dance Revolutionaries referred to Madonna as "a pioneer" of dance-pop. According to Fouz-Hernández, "Madonna's frequent use of dance idioms and subsequent association with gay or sexually liberated audiences, is seen as somehow inferior to 'real' rock and roll. But Madonna's music refuses to be defined by narrow boundaries of gender, sexuality or anything else."
