An Unbridled's Song colt sold for $950,000 Wednesday early during the third session of the Keeneland September yearling sale. Stonestreet Stable, owned by Kendall-Jackson winery founder Jess Jackson was the buyer. Taylor Made Sales Agency consigned the colt as agent.Produced from the 13-year-old Storm Cat mare Thiscatsforcaryl, who is a full sister to stakes winner Cat Affair, the colt is a full brother to added-money winner Be Like Mike."He's a really nice horse," said Kentucky bloodstock agent John Moynihan, who is an adviser to Jackson. "Whenever I find a good one by Unbridled's Song that's out of a Storm Cat mare, I have a lot of confidence because that's a cross that hasworked with Buddha and several others. He has a really good physical, and he's a well-bred horse. After today, there will be fewer and fewer of those kind."I knew he would bring a lot of money," Moynihan added, "but I didn't expect him to bring that much. But it really doesn't surprise me because the sale is going well."In general, Jackson is "trying to buy really nice horses with good physicals that look like they'll have a good racing future," Moynihan said.