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hipo posted an update 9 years, 8 months ago
http://orthodoxwiki.org/Cherubic_Hymn – Cherubym Song (Cherubic Hymn) – Authored by st. emperor Justinian I (482 – 565) –
https://en.wikipedia.org/wiki/Justinian_I
st. Justinian was also the one who has summoned the 5th Church Council in 553