I thought I'd share this hymn; it was composed by St. Nektarios of Aegina in the 19th century. As the story goes, Mary herself appeared to St. Nektarios and told him to write down a hymn that the angels were about to sing.
[youtube]Mw8XE3j_c0U[/youtube]
Since some of the words in this particular rendition are in Greek, I'm supplying the full English lyrics,
courtesy of Wikipedia:
(A) O pure and virgin Lady,/ O spotless Theotokos: Rejoice, O unwedded Bride!
O Virgin Queen and Mother/ O dewy fleece most sacred:/ Rejoice, O unwedded Bride!
(B) O height transcending heaven above/ O beam of light most radiant:/ Rejoice, O unwedded Bride!
O joy of chaste and virgin maids/ surpassing all the angels:/ Rejoice, O unwedded Bride!
(C) O brilliant light of heaven above/ most clear and most radiant: / Rejoice, O unwedded Bride!
Commanding chief of heavenly hosts/ O holiest of holies/ Rejoice, O unwedded Bride!
(A) O ever-virgin Mary/ O Mistress of creation:/ Rejoice, O unwedded Bride!
O Bride all-pure and spotless/ O Lady all-holy:/ Rejoice, O unwedded Bride!
(B) O holy Mary, Bride and Queen/ and cause of our rejoicing/ Rejoice, O unwedded Bride!
O Maiden Queen most hon'rable/ O Mother most holy/ Rejoice, O unwedded Bride!
(C) More precious than the cherubim/ more glorious than the seraphim:/ Rejoice, O unwedded Bride!
Surpassing principalities/ dominions, thrones and powers:/ Rejoice, O unwedded Bride!
(A) Rejoice, song of the cherubim/ Rejoice, hymn of the angels:/ Rejoice, O unwedded Bride!
Rejoice, ode of the seraphim/ and joy of the archangels:/ Rejoice, O unwedded Bride!
(B) Rejoice, O peace; Rejoice, O joy/ and haven of salvation: Rejoice, O unwedded Bride!
O bridal chamber of the Word/ unfading, fragrant blossom:/ Rejoice, O unwedded Bride!
(C) Rejoice, delight of paradise/ Rejoice, life everlasting:/ Rejoice, O unwedded Bride!
Rejoice, O holy tree of life/ and fount of immortality:/ Rejoice, O unwedded Bride!
(A) I supplicate thee, Lady/ I humbly call upon thee:/ Rejoice, O unwedded Bride!
O Queen of all, I beg thee/ to grant me thy favor:/ Rejoice, O unwedded Bride!
(B) O spotless and most honored maid/ O Lady all holy:/ Rejoice, O unwedded Bride!
I call upon thee fervently/ thou temple most holy:/ Rejoice, O unwedded Bride!
(C) O thou my help, deliver me/ from harm and all adversity:/ Rejoice, O unwedded Bride!
And by thy prayers show me to be/ an heir of immortality:/ Rejoice, O unwedded Bride!
Aaaand, a rendition done by some of the monks at the Valaam Monastery, in northwest Russia, fairly close to Finland:
[youtube]C7vvPXz-Qes[/youtube]