Spy Song was an American

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 Thoroughbred

Thoroughbred

The Thoroughbred is a horse breed best known for its use in horse racing. Although the word thoroughbred is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed...

 racehorse. He was sired by 1934 American Champion Two-Year-Old Colt Balladier and out of two-time Champion

Eclipse Award

The Eclipse Award is an American thoroughbred horse racing award named after the 18th century British racehorse and sire, Eclipse. The Eclipse Awards, honoring the champions of the sport, are sponsored by the National Thoroughbred Racing Association , Daily Racing Form and the National Turf Writers...

 filly

Filly

A filly is a young female horse too young to be called a mare. There are several specific definitions in use.*In most cases filly is a female horse under the age of four years old....

, Mata Hari

Mata Hari (horse)

Mata Hari was an American Champion Thoroughbred filly racehorse bred and owned by Charles T. Fisher, a Detroit automobile body manufacturer who raced under the Dixiana Stable banner named for his Dixiana Farm in Lexington, Kentucky....

. He was bred at owner Charles Fisher's

Charles T. Fisher

Charles Thomas Fisher was a Catholic American businessman and an automotive pioneer.Born in Norwalk, Ohio, Charles was the second son of Lawrence and Margaret Fisher. The family would grow to include seven boys and four girls...

 Dixiana Farm

Dixiana Farm

Dixiana Farm, founded in 1877, is an American Thoroughbred horse breeding farm in Lexington, Kentucky.-Barak G. Thomas:Formerly known as Hamilton Stud, Dixiana, owned by Barak G. Thomas, a Confederate soldier in the Civil War and later Sheriff of Fayette County, Kentucky, took the breeding world by...

 and raced under the colors of his Dixiana Stable.

Among his wins, Spy Song won the 1945 Arlington Futurity and ran second to Assault

Assault (horse)

Assault was an American Hall of Fame Thoroughbred racehorse who won the U.S. Triple Crown in 1946.-Early life:...

 in the 1946 Kentucky Derby

Kentucky Derby

The Kentucky Derby is a Grade I stakes race for three-year-old Thoroughbred horses, held annually in Louisville, Kentucky, United States on the first Saturday in May, capping the two-week-long Kentucky Derby Festival. The race is one and a quarter mile at Churchill Downs. Colts and geldings carry...

. He retired having won fifteen of thirty-six starts with earnings of $206,325.