Willie Mullins' second string Glens Melody (9-2) took the Frank Ward Solicitors Solerina Mares Novice Hurdle with the better-fancied 2-5 favourite Zuzka only third.
Stable jockey Ruby Walsh was on the wrong one and Paul Townend produced Glens Melody to lead at the last and power away to win by four and a half lengths from Jennies Jewel.
"Mine's a good mare and is in very good form. It took her a while to come and she had a nice run the last day. I gave her a good chance," Townend told At The Races.
"Mr Mullins left it up to me and I had a chat with Ruby and he said she had come on a lot from when I last rode her.
"Everything worked out the best for me. She went through the ground and the race smoothly.
"Her form is solid and she couldn't have done any more today."