This chapter highlights four (often conflicting) ways in which the scientific, sociological, and literary discourse of the modernist period conceives of radio as constituting identity: by producing a national community, by enabling connections between nations, by extending the bodily nervous system, and by producing a specific kind of individual, the listener. It demonstrates that Woolf takes an active role in conceptualizing and negotiating the future of radio. The first section, ‘Radio Selves’, argues that Woolf’s representations of radio are much more aligned with the idea that radio is a vehicle for internationalism, and the idea that it extends the sensory capacity of the body, than with the conception of a national radio community. The second section considers Woolf’s construction of 'The Listener'. Through an analysis of archival documents about the formation of the BBC’s Listener Research Unit, it identifies resonances between Woolf’s depiction of a responsive audience in Between the Acts and statements by BBC producers promoting the listener’s active participation in the making of radio. The chapter concludes by reading Between the Acts as a utopian fantasy in which thoughts are perfectly communicable and individualities mingle and merge in the ether – a fantasy founded upon the connective power of radio.