Please help identify the chant in the video -

[jakasaki]

Hi everyone,

Can you please look at this you tube video from Russia, Land of the Tzars part 1

Position the cursor on 5.49 where you see 2 icons - and about 5.50-51 they play
a chant which sounds like maybe Gregorian or Byzantine.

It’s hard to listen quite clearly because it’s on the background and the narrator is speaking.

Can any of you identify the chant for me -

Thanks much!
Pam

youtube.com/watch?v=9r_WXKto268

 

[Saintlucy]

Pange, lingua, gloriosi Corporis mysterium, Sanguinisque pretiosi, quem in mundi pretium fructus ventris generosi Rex effudit Gentium. Nobis datus, nobis natus ex intacta Virgine, et in mundo conversatus, sparso verbi semine, sui moras incolatus miro clausit ordine. In supremae nocte coenae recumbens cum fratribus observata lege plene cibis in legalibus, cibum turbae duodenae se dat suis manibus. Verbum caro, panem verum verbo carnem efficit: fitque sanguis Christi merum, et si sensus deficit, ad firmandum cor sincerum sola fides sufficit. Tantum ergo Sacramentum veneremur cernui: et antiquum documentum novo cedat ritui: praestet fides supplementum sensuum defectui. Genitori, Genitoque laus et jubilatio, salus, honor, virtus quoque sit et benedictio: Procedenti ab utroque compar sit laudatio. Amen.

Written by St. Thomas Aquinas for the Feast of Corpus Christi it is also sung on Maundy Thursday when the Blessed Sacrament is carried to the Altar of Repose.