Hively Tracker is a tracker program based upon the AHX format. The format was relatively popular, and many songs were created and used in scene productions and games. AHX was designed to create a very SID-like sound on the Amiga. HivelyTracker can import and export modules and instruments in the AHX format, but it also improves on AHX in several ways and therefore has its own instrument and module formats. Music tracker’s user interface is usually number based. Notes, parameter changes, effects and other commands are entered with the keyboard into a grid of fixed time slots.