Today I was introduced to the app Songza and I am instantly hooked. Songza is a free music streaming application for your iPhone and iPad. The service recommends various playlists based on time of day and mood or activity. Songza offers playlists for activities such as waking up, working out, commuting, concentrating, unwinding, entertaining, and sleeping. Users can vote songs up or down, and the service will adapt to the user’s personal music preferences.Users can find playlists not just based on artists, songs, or genres, but also based on themes, interests, and eras.