Silent night (Stille Nacht, heilige Nacht) is a popular Christmas carol, composed in 1818 by Franz Xaver Gruber to lyrics by Joseph Mohr in the small town of Oberndorf bei Salzburg, Austria. It was declared an intangible cultural heritage by UNESCO in March 2011. The song has been recorded by a large number of singers from every music genre. It was first performed on Christmas Eve 1818 at St Nicholas parish church in Oberndorf, a village on the Salzach river. Gruber was schoolmaster and organist in the nearby village of Arnsdorf. Before Christmas Eve, Mohr brought the words to Gruber and asked him to compose a melody and guitar accompaniment for the church service. Both performed the carol during the mass on the night of December 24. The original manuscript has been lost. However a manuscript was discovered in 1995 in Mohr's handwriting and dated by researchers at ca. 1820. It shows that Mohr wrote the words in 1816 when he was assigned to a pilgrim church in Mariapfarr, Austria, and shows that the music was composed by Gruber in 1818. This is the earliest manuscript that exists and the only one in Mohr's handwriting. In 1859, the Episcopal priest John Freeman Young published the English translation that is most frequently sung today. The version of the melody that is generally used today is a slow, meditative lullaby, differing slightly (particularly in the final strain) from Gruber's original, which was a sprightly, dance-like tune in 6/8 time. Today, the lyrics and melody are in the public domain. The carol has been translated into about 140 languages. The song was sung simultaneously in French, English and German by troops during the Christmas truce of 1914 during World War I, as it was one carol that soldiers on both sides of the front line knew.