Justin Bieber, one of the most famous teenagers turned millionaire entrepreneurs, branched out from his pop star singer status into the tech field, where he’s holding stake in a handful of companies as a venture capital investor. Last year FORBES measured the pop stars last two years earnings at about $108 million. Some say one of the companies he has invested in is Spotify. Spotify is a commercial music streaming service providing digital rights management restricted content from record labels. This service had approximately 15 million users which 4million are said to be paid Subscriptions. Spotify is available for Android, BlackBerry, Boxee, iOS, Linux, MeeGo, Microsoft Windows desktop, Openpandora, OS X, Roku, S60 (Symbian), Samsung Smart TV, Sonos, Squeezebox, Telia Digital-tv, TiVo, WD TV, webOS, Windows Mobile, and Windows Phone.