4Q is a merged format of usually seperated Quartet Atari ST musics (.4V and .SET). This format can be replayed on Windows using Jam for Windows 2.1 by Cream.

Quartet is a digital music composition program by Microdeal. It combines the sample playing abilities of a tracker with conventional music notation known from MIDI software. The program is named after its 4-note polyphonic tracker. The program was released for Atari ST and Amiga.

SNDH is a container format for all types of Atari 16/32-bit music. It contains music data as well as the native playroutine. This format can be replayed on Windows using Jam for Windows 2.1 by Cream.

Wrath of the Demon is a computer game developed by a Quebec-based team called Abstrax. Versions for Atari ST, Amiga, Commodore CDTV, and PC were released in Early 1991. There was also a Commodore 64 version. More information on Wikipedia.