Published December 20, 2016 WASHINGTON — An impromptu performance of the Christmas classic “O Holy Night” recorded in the Union Station Metro station has gone viral.

A better documented, if generally overlooked, instance of the nurturing power of “O Holy Night” was reported in The Marine Corps Times in December 2004.

“O Holy Night” is one of the most dramatically beautiful Christmas carols ever penned but is unfortunately performed only rarely because of the melody’s extended range.

Originally a French carol, ‘O Holy Night’ is a world-famous Christmas melody. We explore its lyrics and English translation, as well as the esteemed names who have recorded it.

An impromptu performance of the Christmas classic "O Holy Night" recorded in the Union Station Metro station has gone viral.

Learn more about 'O Holy Night' as performed by Lea Salonga with the Tabernacle Choir and Orchestra in the 'Season of Light' Christmas special.