The company I work for (Josephmark) was hired by MySpace to redesign the site and create something radically different. The interface you see was created by a few talented designers, the video you say was staged is definitely not staged. What you are seeing is what the new MySpace will look like when it's ready to launch. Yes, the site is focusing music - the new MySpace is going to be a social music platform because it has always and still is MySpace's biggest strength (they have access to more music and videos than anyone else), when you have more music than Spotify it would be crazy to try and target a different niche. it has been mentioned by MySpace themselves in interviews about the new site it's a music product. MySpace are not trying to compete with Facebook, if anything their new competitors are now Spotify, Last.fm and Rdio. The very fact you can login with your Facebook is proof of this enough.
The new MySpace is very much a music product. It has a fresh, crisp interface and it's smooth, sexy & fast. It's the fastest and best performing MySpace by far. What you see is the impressive work of the MySpace development team who have done an amazing job at taking ambitious designs and turning them into something captivating and interactive.
Don't judge the site people until you try it. From a developer perspective, I think most people here on HN will appreciate how technologically advanced and smooth the new MySpace is which has been built from the ground up when it's launched. As you can see it's more than a mere re-skinning of the old MySpace code base.