Last.fm - http://www.last.fm/...
What is last.fm? Last.fm is an online music services that creates automated radio stations based on your music tastes - which it intelligently learns over time via an advanced algorithm and a process known as scrobbling.
Music
Music is an art form in which the medium is sound. Elements of music are pitch (which governs melody and harmony), rhythm (and its associated concepts tempo, meter, and articulation), dynamics, structure, and the sonic qualities of timbre and texture.
Radio
Radio is the transmission of signals, by modulation of electromagnetic waves with frequencies below those of visible light. Electromagnetic radiation travels by means of oscillating electromagnetic fields that pass through the air and the vacuum of space. Early speculation that this required a medium of transport, called luminiferous aether, were found to be false. Information is carried by systematically changing (modulating) some property of the radiated waves, such as amplitude, frequency, or (more recently) phase. When radio waves pass an electrical conductor, the oscillating fields induce an alternating current in the conductor. This can be detected and transformed into sound or other signals that carry information.
Scrobbling
Last.fm is a UK-based internet radio and music community website, founded in 2002. It claims over 21 million active users based in more than 200 countries. On 30 May 2007, CBS Interactive acquired Last.fm for £140m ($280m USD). Using a music recommendation system known as "Audioscrobbler," Last.fm builds a detailed profile of each user's musical taste by recording details of all the songs the user listens to, either on the streamed radio stations or on the user's computer or portable music device. This information is transferred to Last.fm's database ("scrobbled") via a plugin installed into the user's music player. The profile data is displayed on a personal web page. The site offers numerous social networking features and can recommend and play artists similar to the user's favourites.
Music taste
A taste in music is a personal preference or opinion on the type/genre of music you personally like.
Artificial Intelligence