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
Lego Minecraft with custom moulds for the character heads, tools and certain body parts (for example the Creeper, which consists of primarily a single moulded piece for its torso and legs). When asked about Lego Minecraft's beginnings, Mojang chief executive officer Carl Manneh stated that "it was one of the first things we talked about when we started Mojang." Mojang started the project on the Lego CUUSOO program, which required ten thousand signatures for the project to be approved. With the strong support of the "Minecraft" community, the signature objective was achieved within a matter of days, and the development of the