The co-songwriter of the Christmas classic 'Here Comes Santa Claus' is Gene AUTRY, a five-letter word that fits in the crossword puzzle. AUTRY was an American singer, songwriter, actor, and businessman who was one of the most popular and financially successful singers of the 20th century. He was also the owner of a television station, several radio stations in Southern California, and the Los Angeles/California/Anaheim Angels Major League Baseball team from 1961 to 1997. AUTRY's recording career spanned almost 60 years, making him one of the longest-lived recording artists of all time.