Spotify is a freemium music streaming service providing digital rights management-restricted content from record labels including Sony, EMI, Warner Music Group and Universal. Music can be browsed by artist, album, genre, playlist, or record label, as well as by direct searches. On computers, a link allows the listener to purchase selected material via partner retailers. Spotify music streaming can be accessed via all mobile phones and desktops for unlimited amounts of time. Offline listening as well as listening without ads can only be received by Premium service subscribers.