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.