ProTracker

ProTracker is a descendant of SoundTracker which added support for many more commands, more samples per song and other crucial additions. It was probably the most wide-spread tracker on the Amiga. It was first released in 1990 by Lars Hamre, Anders Hamre, Sven Vahsen and Rune Johnsrud. It became the de-facto standard for both demo scene musicians and game musicians. It also ended up pretty much dictating the mod file format.