Popular Internet radio services include Pandora, Last.fm, Slacker Personal Radio, Spotify and Live365. Others are Screamer Radio, SHOUTcast Radio Directory, Streema and Radio Tuna, as of 2015.
The ad-supported version of Pandora radio is free, however an ad-free premium service called "Pandora One" is also available. To use Pandora, search for a song, artist or genre; the company's Music Genome Project then scans Pandora's database and begins playing a music playlist that shares similarities with the search term. The Genome Project utilizes up to 450 different musical characteristics to find the optimal playlist to match the search. Pandora also offers comedy playlists, and users can create up to 100 "unique" stations.
Live365 is a radio network that features over 260 genres of high-quality music. Public radio stations can also be streamed, while select DJs curate their own personal playlists as well. The basic service is free, though Live365 also offers a VIP premium service that delivers ad-free music and the ability to listen to the service with mobile devices.
Spotify gives a user access to millions of tracks that can be streamed to a computer, iPhone or iPad. Further, a recommendation engine displays similar artists or songs that fit a current mood. Spotify is free, although a paid version supports ad-free listening, higher sound quality and an offline listening mode.