Minecraft led to Persson becoming one of "Forbes" "World's Billionaires". "Minecraft"s music and sound effects were produced by German musician Daniel Rosenfeld, better known as C418. The background music in "Minecraft" is instrumental ambient music. On 4 March 2011, Rosenfeld released a soundtrack, titled "Minecraft – Volume Alpha"; it includes most of the tracks featured in "Minecraft", as well as other music not featured in the game. The video game blog Kotaku chose the music in "Minecraft" as one of the best video game soundtracks of 2011. On 9 November 2013, Rosenfeld released the second official soundtrack, titled "Minecraft – Volume
Uniloc Uniloc filed a lawsuit against Mojang, citing the "Minecraft Pocket Edition", as an infringement upon patents claiming exclusive rights to a method of software license checking. Markus Persson of Mojang has stated he does not believe "Minecraft" infringes the Uniloc US patent no. 6,857,067 and that Mojang AB will defend the lawsuit. The same lawsuit was also filed against other Android game developers including Electronic Arts (maker of "Bejeweled 2"), Laminar Research (maker of X-Plane), Distinctive Developments, Gameloft, Halfbrick Studios, Madfinger Games and Square Enix. Uniloc Uniloc Corporation is a computer security and copy protection software company founded in Australia