The rise and fall of the ringtone industry and its effect on mobile entertainment, music, television, film, and politics. A decade ago, the customizable ringtone was ubiquitous. Almost any crowd of cell phone owners could produce a carillon of tinkly, beeping, synthy, musicalized ringer signals. Ringtones quickly became a multi-billion-dollar global industry and almost as quickly faded away. In The Ringtone Dialectic, Sumanth...