If you aren't aware of Twitch.tv, it's probably time to take notice. Twitch is most notably known for streaming video game play-throughs, commentary and events. The content has been primarily focused on games of all kinds from mega-popular League of Legends to live Dungeons and Dragons sessions. But now they are branching out to Music. A live Steve Aoki concert was featured on the Twitch homepage. When the DVR has replaced appointment television, Twitch is making a strong case for creating appointment viewing on their platform.