Roman was a central figure in Swedish Baroque music. If your "Sammlung" (collection) refers to his work, the most likely pieces included are:
The "Roman Sammlung zip" (Roman Collection) appears to be a specific compilation of classical MIDI files or musical pieces, likely related to the works of (often called the "Swedish Bach") or Domenico Zipoli . Roman Sammlung zip
: The National Roman Legion Museum and other institutions provide online collections that may offer downloadable archival folders for educational use. Roman was a central figure in Swedish Baroque music