biancurath: I remember too.
Sometimes Jack sang Ianto lullabies. Usually when neither of them could sleep. Sometimes the lullabies were in some language Ianto didn't recongize but he didn't let that bother him and he cuddled closer to Jack who ran his fingers though the Welsh man's hair as he sung.
"Jack how do you know all those lullabies?"
"I've had a lot of children Yan." He sounded a little sad as he said that and Ianto wanted to ask him about his kids but Jack went back to singing before he could ask anything. "Rock a by baby..."