The footage features Alex Collazo, a nurse at the Sarah Cannon Cancer Institute, singing with long-time Nashville musician Penn Pennington. Their chosen duet? The 1847 Christmas classic, "O Holy Night."

Pennington, 67, is back on the Oncology ward after his cancer, beaten into remission a decade ago, returned with a vengeance.

"I've been told that it's more life-threatening, it's more aggressive, fast-growing non-Hodgkin's lymphoma," the musician told TODAY. "The particular plan for treating this strain of lymphoma has been an inpatient in the hospital, five days worth of chemo. Because it's so aggressive, we're having to hit it really hard"... Subscribe for free to Breaking Christian News here

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