MOD is a computer
file format used primarily to represent
music, and was the first
module file format. MOD files use the “.MOD”
file extension, except on the
Amiga where the original trackers instead use a “mod.” prefix scheme, e.g. “mod.echoing”. A MOD file contains a set of
instruments in the form of
samples, a number of
patterns indicating how and when the samples are to be played, and a list of what patterns to play in what order.