Venite adoremus Deum

Hello! I need your help!

I'm looking for the Venite adoremus Deum Gregorian chant. Does anyone know where I can find it? I tried the Graudale, Ursualis, Brevis... I can't find it anywhere, but there is a Youtube of the chant: https://youtu.be/wyB9CB4Uoq8. So, I know it exists!

Thank you for your help!

Rebekah