Who was the first artist to win Grammys for Record, Album, Song of the Year and Best New Artist in the same year?

In 1981, Christopher Cross won Record, Album and Song of the Year as well as Best New Artist. He was the first artists to have won all four General Field awards.

Christopher Cross (born Christopher Charles Geppert; May 3, 1951) is an American singer-songwriter from San Antonio, Texas. His debut album earned him five Grammy Awards. He is perhaps best known for his US Top Five hit songs, "Ride Like the Wind", "Sailing", and "Arthur's Theme (Best That You Can Do)", the latter recorded by him for the film Arthur starring Dudley Moore. "Sailing" earned three Grammys in 1981, while "Arthur's Theme" won the Oscar for Best Original Song in 1981 (with co-composers Burt Bacharach, Carole Bayer Sager, and Peter Allen).