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 Beta", which includes the music that was added in later versions of the game. A physical release of "Volume Alpha", consisting of CDs, black vinyl, and limited-edition transparent green vinyl LPs, was issued by indie electronic label Ghostly International on 21 August 2015. The game can run on multiple operating systems, including Microsoft Windows, macOS, and Linux. Apart from "Minecraft: Java Edition" and "Minecraft" for Windows 10, there are other versions of "Minecraft" for PC, including "Minecraft Classic", "Minecraft 4k", and "Minecraft: Education Edition". "Minecraft Classic" is an older version of "Minecraft" that was first available online and can currently