Cetinje Octoechos

The Cetinje Octoechos (Serbian: Цетињски октоих or Cetinjski oktoih) is an Orthodox liturgical book printed in 1494 in Cetinje, the capital of the Principality of Zeta (present-day Montenegro). It is the first incunabulum written in the Serbian recension of Church Slavonic, as well as the first book printed in Cyrillic in Southeast Europe. The octoechos was produced under the direction of Hieromonk Makarije at the Crnojević printing house, which was founded in 1493 by Đurađ Crnojević, the ruler of Zeta. Printed in two instalments, its first volume contains the hymns to be sung to the first four tones of the Octoechos system of musical modes, and the hymns for the remaining four tones are included in the second volume. The two volumes are called Octoechos of the First Tone (Oktoih prvoglasnik) and Octoechos of the Fifth Tone (Oktoih petoglasnik), respectively.