Just watch and enjoy. (For those interested, I have no idea who they are. They YouTube link simply says “Creative high schools students give a great rendition of Halleluia!”)
My brother did some sleuthing and found another version of this routine. The preface is well worth watching, even if you do not have time for the rest.
[...] HT: Targuman [...]
The Jah guy in the second video looks suspiciously like you, Chris – though I always thought you were taller!
Ah well, I am just not that talented!