Streaming music on your phone would be fantastic -- if it weren't for all those pesky data caps. T-Mobile's latest UnCarrier move addresses this particular pain point: Starting today, you'll be able to listen to all of your favorite jams on popular streaming music services without it counting against your data plan. The catch? It's limited to a few of the most popular offerings, such as Pandora, Spotify, iTunes Radio, iHeartRadio, Slacker, Rhapsody and Samsung's Milk Music. T-Mobile exec Andrew Sherrard explained that the aforementioned services encompass 85 percent of what users listen to, so the list covers the vast majority of the carrier's consumers. That said, Sherrard said that the company plans to reach out for feedback via a social media campaign, so make your voice heard if you're interested in getting services like Rdio or Google Play Music added to the list. If your favorite program is included, feel free to start filling up those playlists to your heart's content.