NoiseTracker is a freeware tracker created 1989 for the Amiga platform.[2][3] It was based on the Ultimate Soundtracker and developed by Pex "Mahoney" Tufvesson and Anders “Kaktus” Berkeman.[4][6] It was used by Amiga game musicians to create music with four channels of sampled stereo sound. Additionally it was used by some music groups as a low cost alternative to a full studio for rudimentary backtrack music production. One of the users is Tomas Danko and it was also used by Axwell of Swedish House Mafia.[3]