Recommendation and discovery of music is the next frontier. Some services, like Beats Music, have developed secret algorithms, using smart data from social networks to produce automatic playlists. Others use a mixture of hand-built categorisation and automation. Pandora is the American market leader in computer-generated playlists. Users plug in a song they really like and, via its “music genome” system, the service generates an endless stream of similar sounding recordings. – Jeremy Silver, The Telegraph http://ift.tt/1oi3FVD