Hymns and spiritual songs reverberate through the under-construction basement.
The singing contractors are giving the glory to God after they finish up a hard day's work.
Now, their a cappella "How Great Thou Art" is taking the Internet by storm.
"We've actually shed a few tears because we don't feel like that we're worthy of this at all," Aaron Gray said.
But their voices are nothing short of glorious. Take a look!
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