“…The dissertation "hears" mediated commentary about radio programming, and the larger issue of radio itself, as a prime example of vernacular public discourse before the official discourse of the commercial networks was broadcast as the normalization of the airtime schedule. The socio-cultural diversity of broadcasters which included churches, educational institutions (Rinks, 2002), labor unions (Godfried, 1997), urban ethnic communities (Vaillant, 2002a), and political movements (Gullifor & Carlson, 1997) ensured a pluralism of voices that juxtaposed together on the bandwidth created situations of rhetorical persuasiveness and expressions of socio-cultural difference perceived by (especially) urban radio listeners. While it may be the case that many listeners only tuned to stations and broadcasters they were sure to enjoy or agree with, it may also equally be the case that many listeners were intrigued enough by the communicative possibilities of the new mass medium that they actively sought out new local broadcasting experiences; this is part of what Douglas (1999) means by "exploratory listening" as an early mode of the popular appreciation of radio.…”