Kemp was quick to grab Tarrant who has been riding plenty of winners since returning from a break in September.
“Sold For Song is a tricky mare to ride so experience on her is an advantage. One thing I will be telling him is to get her to the outside.
“Horses can finish strongly along the fence but nine times out of 10 they are better with plenty of room out wide.”
Sold For Song hasn't won since June 2016 but 18 of her 21 runs since have been in stakes races and she has been placed several times.
Kemp believes Sold For Song's get-back in the field racing style has played against her.
“You are always going to want luck in races when you get back in the field and that is particularly the case at Doomben,” he said.
“She only has 54.5 kilograms on Saturday so with any luck she should be right in it.
“Luke has been lucky for me and while he doesn't ride for the stable much he won a couple on Tisani Tomso.”