Functional uses of personal stereo systems (after M. Bull, "Investigating th Culture of Mobile Listening," 2006)1. To block out any external sound2. Moving through space and time with accompanying soundtrack
3. Aestheticising of the environment
4. Immersion in one's own auditory world
5. Cure for isolation
6. Controlling "inner chaos"
7. Controlling public interaction
8. Regaining control over time
9. Energizing function