Streaming Music: Free Internet Music Discovery Services

Many of these are radio-style services, with prechosen categories or stations of music and advertisements. Some also involve creating an account or an upgrade to a premium account with a monthly fee.

• Tunein.com
  Lets you listen to existing stations across the US and the world.
• Spotify
  Music streaming service with a six-month free trial period (or 48 hours for mobile), followed by limited free service with advertisements. You can register with a Facebook account.
• theradio.com
• www.last.fm
• Turntable
• Live365 Internet Radio
• Rdio.com
• Slacker Radio