
| Johann Crüger, Musicae practicae: Praecepta brevia, et exercitia pro tyronibus varia (Sumptibus authoris, Berlin 1660) | ||
| 32 textless canonic duos at the unison. The duos are found at pp. 50-67 of Crüger's treatise, under the rubric: «Exercitanionum Musicarum / CLASSIS SECUNDA. / Darinnen allerhand Fugen à 2 Voc. ex Unisono / zu singen begrifften». The music bears several solmization syllables. |
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