Weld took the prize in 2012 with Pale Mimosa and the Rosewell House trainer has a bright prospect in Search For A Song, who was having only her fourth career start.
Closely related to the classy Free Eagle and Falcon Eight, Search For A Song (3-1 favourite) pulled away in the closing stages to score by a length and three-quarters from Vivionn, with Spirit Of Appin a head away in third.
Weld said: “She did that very nicely. Oisin did a nice job getting her in behind the speed and she’s a nice staying filly. I was quite relaxed throughout the race.
“We’ll see how she comes out of the race before we decide where she goes.
“She’ll definitely be in Group company next, but I really see her coming into her own as a four-year-old.”