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
Minecraft mods project. "Minecraft" mods are credited for being a gateway for children to pick up coding and programming. Several educational projects have been created to further encourage students to learn coding through "Minecraft", including LearnToMod, ComputerCraftEdu, and Minecraft: Pi Edition, all of which are offered free to teachers. Programming classes utilizing "Minecraft" were also started by the University of California, which aims to teach children aged 8–18 how to program applications. In 2011, "MinecraftEdu" formed to sell a version of Minecraft to schools that enabled the teaching of a wider variety of subjects including language, history and art. In January 2016,