The Oktoih of the I-IV Tones started to be printed in 1493 and finished in 1494. Although printed at the Crnojevic printing office in Obod, this Oktoih was known as - The Oktoih of Cetinje

OKTOIH - THE BOOK OF EIGHT TONES Orthodox church uses The Oktoih in ordinary weekly cycles of church services throughout the ecclesiastical year.