It's after the chant, which is believed to be around 800 years old, was re-discovered in Scotland.
A dance version of the melody, which was found in a Missal Fragment in Hawick, has been created by drum 'n' bass artist Goldie.
Unlike the medieval rendition, the modern performance will include a choir and a full orchestra.
It'll be the first time the new version has been played publically.
The collaborative project was organised through University College Oxford.
Dr Matthew Cheung Salisbury is a medieval music expert there who's worked on the project.
He says Goldie was an "natural" choice to work with, adding "he's an expert at mashing things up, that's what he does, really.
"Throughout his career, he's taken sound and music and used it in new and different ways.
"Secondly, he knows quite a lot about classical music; Goldie listens to and has performed some classical music in his time and he's even composed a piece for the proms.
"Thirdly, he brings an exciting new energy and new ideas to this project, all of which has been really helpful for us."
He also told Premier church-goers hundreds of years ago would've all recognised the significance and divinity in what they were singing about.
He's excited to see how that will compare with the first-ever modern audience tomorrow: