"Blue Christmas" is a Christmas song written by Billy Hayes and Jay W. Johnson and most famously recorded by Elvis Presley, although it was first recorded by Doye O'Dell in 1948. It is a tale of unrequited love during the holidays and is a longstanding staple of Christmas music, especially in the country genre.

Christmas music comprises a variety of genres of music regularly performed or heard around the Christmas season. Music associated with Christmas may be purely instrumental, or, in the case of carols, may employ lyrics about the nativity of Jesus Christ, traditions such as gift-giving and merrymaking, cultural figures such as Santa Claus, or other topics. Many songs simply have a winter or seasonal theme, or have been adopted into the canon for other reasons.