Berlin: R. Kaun, n.d.. Plate K.184.
Public Domain [tag/del]
600 dpi scans with added measure numbers. Preface of the score is dated 1891 (upload soon)
||Op.34 (also Op.26 - see comments)
||1 (opening Langsam, mit Ausdruck)
|Year/Date of Composition
||1891 (?) – Berlin: R. Rühle
||Dr. Louis Frank
||Clarinet, Horn, Bassoon, 2 Violins, Viola, Cello and Double Bass.
"A particularly nice “warm-up” before playing the Schubert Octet" (PDF)
Opus number conflict: Vier Stücke für Pianoforte (Hamburg: Rahter, 1902) was also published as op.34. In the card-catalog at D-B several other examples of duplicated op. numbers are documented. Kaun apparently reassigned opus numbers: In his Werkverzeichnis (Hugo Kaun Werkverzeichnis, 1929) the octet is listed as op.26, first published by R. Rühle in 1891.
(The score has been reprinted by Musikproduktion Höflich; the preface of this reprint may be available online in the future.)