Ardmelody's dam, Thistlewood, was a half-sister to both the outstanding stayer Ardross and the Prix de Flore winner Gesedeh, the grand-dam of Electrocutionist.
[4] In September 2003, the yearling was sent to the Goffs sale where he was bought for €260,000 by the bloodstock agent Dermot "Demi" O'Byrne on behalf of the Coolmore organisation.
[6] Despite his defeat at the Curragh, the colt was again stepped up in class for the Group One Prix du Jockey Club at Chantilly Racecourse on 5 June.
After restraining the colt in the early stages Fallon attempted to make a forward move in the straight but Scorpion made no progress and finished sixteenth of the seventeen runners behind Shamardal, who defeated the favourite Hurricane Run by a neck.
He finished fifth behind Red Rocks in the Breeders' Cup Turf at Churchill Downs in November and seventh behind Collier Hill in the Hong Kong Vase at Sha Tin Racecourse in December.
[10] Scorpion started 4/5 favourite for the Hardwicke Stakes at Royal Ascot on 23 June but was beaten half a length by Maraahel, to whom he was conceding five pounds.
On 28 July, Scorpion started 3/1 second favourite (behind his stable companion Dylan Thomas) for Britain's most prestigious weight-for-age race, the King George VI and Queen Elizabeth Stakes over one and a half miles at Ascot.
On his final racecourse appearance, Scorpion was matched against another stable companion, the double Ascot Gold Cup winner Yeats in the Irish St. Leger over one and three quarter miles at the Curragh on 15 September.
Scorpion went to the front from the start and held the lead until well inside the final furlong when he was caught and beaten half a length by Yeats.