The curtain that separates the official layer of knowledge intended for the public from the inspiring stimuli and ideas has numerous cracks, and an attentive reader will surely find many parallels and intersections not only in published folkloristic works, but also in musical-theoretical works (I/2-1, 2).
The effort to find an ideal theoretical introduction for the song edition, which was prepared by the Working Committee for the Czech National Song in Moravia and Silesia led by Janáček as part of the collecting and publishing activity Folk Song in Austria, runs through the entire edition as a red thread. However, the selected part of this collection only saw the light of day in the Czechoslovak National Institute for Folk Song, i.e. after Janáček's death. Here, for the first time, the unrealized concepts of the introduction to this collection are presented, thereby revealing Janáček's enormous thematic focus and erudition, entitling the author to make generous plans and masterful actions in both mentioned institutions.