Doubles all round as Tune The Chello hits right notes
The 11/10 favourite held the initiative in the home straight and jumped the second last just in front of Reine Fee.
The leader was ridden before the last where she was joined by a threatening Reine Fee (8/1). She got away well from that fence and kept up the gallop to increase the margin to a length at the winning post. Icee M B A performed with credit in third at 50/1, beaten two and a half lengths by the winner.
Blackmore said: "She really had to battle and hopefully she'll improve again from that today.
"She was a good hurdler and is a nice mare. Hopefully there'll be plenty more fun to be had with her."
The successful triumvirate also saw Gin On Lime bring up her hat-trick in the novice chase on the card.