Some popular music-streaming services are Pandora, iHeartRadio, Slacker, Rhapsody, iTunes radio and Spotify. Subscribers tend to choose their music-streaming sources from the many available options based upon price, music selection and available platforms.
Music-streaming services often allow free or paid options for listener. Free versions of music streaming typically include paid advertisements from sponsors. Subscribers can avoid these advertisements by upgrading to paid memberships. Membership to streaming services also allows subscribers to have added benefits such as more music selection and being able to pick a specific song. As of 2015, iHeartRadio offers completely free service with no need to upgrade to a paid membership.