Millionaire Sultry Song, whose son Singletary won last year's NetJets Breeders' Cup Mile (gr. IT), will stand the Southern Hemisphere season at Haras Arroyo de Luna in Argentina. Singletary returned this year to win the Arcadia Handicap (gr. II) at Santa Anita and top the $1.5-million mark in earnings.Sultry Song, a 17-year-old son of Cox's Ridge out of the Buckfinder mare Sultry Sun, has sired 17 stakes winners. He stands for $5,000 at Millennium Farms Kentucky near Lexington. He is scheduled to return to Millennium for the 2006 season.