The song "Rudolph the Red-Nosed Reindeer" was originally written by Johnny Marks in 1949. It was first performed by Gene Autry and became a hit single, reaching the top of the charts. It has been covered by many artists over the years, including Bing Crosby, Ella Fitzgerald, and Michael Buble. It's one of the most well-known Christmas songs and has become a beloved holiday classic.