watch youtube while browsing the web/twitter/facebook

Hello guys, first of all I am sorry, this kind of functionality may be only possible on Xperia phones. But I find this so cool that I am sharing it and somebody may figure out how to do similar thing on different phones;) The problem of youtube app is, that it plays only when in foreground. You can't do anything else and even if you just want sound you can't go away from youtube app. But Sony Xperia has this thing called mini apps which allows you to run miniapps over other apps (similar to facebook messenger). One of the miniapps is a browser! So I find it really nice (finally it feels like a pc!) that I can listen to some documentary/discussion/music on youtube and have anything over it in this minibrowser (which can be extended to almost fullscreen)