In a panel at MineCon in 2012, Rosenfeld stated that he has had a long-term interest in video games, and was involved with several video game communities.[1] He met Markus Persson in an Internet Relay Chat (IRC), and began composing music for Minecraft when the game was in its very early stages as a tech demo.[2] The two shared interest in Aphex Twin, and exchanged each other's projects. Both were impressed by each other's work, and eventually, Persson chose to pair Rosenfeld's music with his game.[9]