Josh Turner's oldest son Hampton, 3, has already picked up some of Dad's tricks for dealing with his new 4-month-old brother. "If Colby starts crying in the car, Hampton will start singing to him to calm him down," says Turner. "It's got absolutely no effect on Colby, but Hampton tries!" The sibling relationship isn't always quite so harmonious, however. "Sometimes Hampton tries to pull his legs or poke his belly, and it's like, 'You can hurt your brother!' " But for his part, Colby seems to be taking things in stride. "He's more laid-back and has Hampton beat in the sleeping category already," says Turner, 31. That's a plus for a family that's already taken its show on the road. Turner's wife, Jennifer, 31, who sings and plays the keyboard in his band, rejoined his tour with the boys in tow in August. "We have a Pack N' Play bolted to the floor of the bus for Colby, and Hampton is in a bunk," Turner says. "Jennifer was on the road when she was pregnant with each of them, so they sleep better on the bus than they do at home!"