When messaging giant Line signaled its intent to jump into music by acquiring Microsoft's MixRadio, it wasn't kidding around. Meet Line Music, a streaming music service for Japan that (to no one's surprise) is tied closely to the company's chat app. You can not only share tunes in your discussions and on your timeline, but play them without switching apps -- helpful if you want to talk about a new playlist while you're listening to it. The low pricing might also reel you in. It costs just ¥1,000 ($8) per month for unlimited access, and you can get away with ¥500 ($4) if you listen less than 20 hours per month. Students pay as little as ¥300 ($2). Line Music is available right now for Android and iOS users, and there's a web version launching in July.