Upon further reading I discovered this chant preceded the Gregorian chant with which today we are familiar. This is first millenium chant, a sign of the Byzantine influence that was once in Italy.
It seems Marcel Peres works hand in hand at times with Lycourgos Angelopoulos (see the Mozarabic chant CD by the same two men), whose CD recording of the Divine Liturgy in Greek is the same one available online at the site of the GOA.
Keefak ya Sam El yom Keefak inteh ya akhee? 'Ul'lee: b'ai lahjeh Arabiyeh b'tehkee inteh? Ana Sooree.
Into Ortodoxy wila Katoliky? Mitil abooy, ana Rum Katoleek, bas il 'aa'illeh nus Rum Ortodox w'nus Rum Katoleek (I told you this before if you remember), mitil ma hiy'yel 'adeh 'endis Sooriy'yeen ir Rum wal Melkawiy'yeh yitzaw'wajoo bein ba'ad.
Ana kamaan min dai'ah ma' aqal'liyeh Maseehiy'yeh, fa
fee qurbeh awiy'yeh bein ahl it'ta'iftein.
Ana Rum Ortodox I know; you said before. Inshallah ma nseetnee.
wa ajdadi min Kaniset El keyamaBas ma msheet warahun fil kahnoot. Shoo ra'yak titfad'dal wa tseer rahib 'endnal Antakiy'yeh bi Said Naya?

In IC XC
Samer