Songza is a free music streaming and recommendation service for Amazon Kindle Fire. Stating that its playlists are made by music experts, 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, such as “songs in Apple Commercials”, “90s One-Hit Wonders”, and “Music of Fashion Week”.