SMUS

SMUS is an IFF based tracker module music format. Unlike most tracker modules, the instruments are not contained within the file. Instead players look for individual instrument files in the parent directory in a folder called 'Instruments'. Instruments are usually a pair of files, meta data in a  file and actual sampled audio in.

There appears to be two conflicting IFF SMUS formats, one from Deluxe Music and one from Sonix?

Identification
Files begin with.

Software

 * UADE
 * SMUSMIDI (Amiga)
 * smus2midi (Source Code)

Sample files

 * https://telparia.com/fileFormatSamples/music/smus/