And that question is basically is there a proper form of Orthodox music or chant and what could possibly exclude a particular type or piece of music from ecclesiastical use due to being inappropriate or not being in the spirit of Orthodox music.
What does "Orthodox music" even mean? The melodies, rhythms and style of chant of all the ancient Coptic hymns that are still practiced today were not the product of the Coptic Orthodox Church, but of Pharaonic culture and religion.
I'm sure such a question would require a more musically adept individual than myself...It would require knowledge and understanding of the history and development of music within the church. It would also require a certain spiritual insight and maturity to be able to fathom the power and influence of music and it would also require an almost scientific or technical understanding of the various compositions of music their tones, notes and so forth.
Are you serious? Do you think that in the mid-first century St. Mark the Apostle sat down with the early Orthodox population of Alexandria, scientifically and technically analysing the composition of Phraraonic music, "their tones, notes and so forth", before they reached a conclusion that it was suitable to be employed Liturgically? Obviously not. I'm sure when the hymn Apetjeek Evol
was liturgically incorporated by the Holy Synod in the early 1900's that such was not the case either.
Furthermore, as has already been noted, the hymn in question is not even liturgical. I personally had never even heard it prior to downloading it yesterday. I certainly can find no reasonable or common sense argument as to why it cannot be used for meditation and glorification for personal or extra-liturgical use simply because the music is not "traditional" Coptic music.