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Izvornik
Die Dunkle Wolk. Heinz Kratochwil. Choir sheet music. Die Dunkle Wolk. Es geht eine dunkle Wolk herein. Arranged by Heinz Kratochwil. For SSA choir. Choral music. Folk music. Score. Published by Doblinger Music Publishers. DB.O-00371-372.
Prijevod
Die Dunkle Wolk. Heinz Kratochwil. Zbor note. Die Dunkle Wolk. To je tamna Wolk u.. Raspored po Heinz Kratochwil. Za SSA zbor. Zborske glazbe. Folklorna glazba. Postići. Objavio Doblinger Music izdavače. DB.O-00371-372.