John Travolta's First Hit   John Travolta first gained fame as Vinnie Barbarino on the television series Welcome Back, Kotter (1975).
popular adjective (LIKED) A2 liked, enjoyed, or supported by many people: She's the most popular teacher in school. That song was popular with people from my father's generation. Walking is a popular form of exercise in Britain.
Urban means relating to or concerned with a city or densely populated area, The term is exploited by corporations such as MTV to refer to black music/culture, without mentioning race. Anything Urban = $$$$.