The filly from is from Bumble Bloodstock. The filly was sired by SLADE POWER out of THE TERRIER. On the racetrack Slade Power carried all before him in 2014 landing both the G1 July Cup and G1 Diamond Jubilee Stakes to earn himself the title of Europe's Champion older sprinter. His first yearlings sold for up to €310,000 (twice) with a sale average of €93,000.

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HEARTSTRING is a half sister to nine times winner DUTCH MASTERPIECE who grossed earnings of £226,710. She has already shown that she has speed to burn in her first three outings in maiden races. She is now over a viral infection which cut short her 2yo season but is now ready and raring to go in 3yo handicaps in which she has been given an attractive OR of 63.