"Silent Night" is about a calm and bright silent night, and the wonder of a tender and mild newborn child, words written in 1816 by a young priest in Austria, Joseph Mohr, not long after the Napoleonic wars had taken their toll. The backstory is that the priest went for a walk before he wrote it, and he looked out over a very quiet, winter-laden town," says composer/conductor John Conahan, who co-organized the Silent Night Sing-In with WRTI in 2018 and 2019, and created a new arrangement of the famous carol. "He was inspired...the town was at peace."

It was Christmas Eve, 1818, when the now-famous carol was first performed as Stille Nacht Heilige Nacht. Joseph Mohr, the young priest who wrote the lyrics, played the guitar and sang along with Franz Xaver Gruber, the choir director who had written the melody. An organ builder and repair man working at the church took a copy of the six-verse song to his home village. There, it was picked up and spread by two families of traveling folk singers, who performed around northern Europe.

In 1834, the Strasser family performed it for the King of Prussia. In 1839, the Rainer family of singers debuted the carol outside Trinity Church in New York City. The composition evolved, and was translated into over 300 languages with many different arrangements for various voices and ensembles. It was sung in churches, in town squares, even on the battlefield during World War I, when, during a temporary truce on Christmas Eve, soldiers sang carols from home. "Silent Night," by 1914, known around the world, was sung simultaneously in French, German and English.

Over the years, the carol's mystique grew with its popularity. After the original manuscript was lost, for decades, some speculated that the music had been written by Haydn, Mozart or Beethoven. In 1994, an original manuscript was found in Mohr's handwriting, with Gruber named as composer.