''Introitus'' was performed for the first time by Andrzej Chorosiński as an integral part of ''Missa pro pace'' during the world premiere of this Mass on 12 January 2001 in the National Philharmonic in Warsaw, thus inaugurating also the new organ of the Philharmonic.
It may be performed as an introduction to ''Missa pro pace'' or as an independent composition.
- Language of edition: eng, pol
- Number of pages: 26
- Cover: softcover
- No. of edition: 1
- Published: 2002