As a baby my DD would only go to sleep during the day if I sang Incy-Whincy Spider to her and since I got pregnant with my DS when she was only 6 months he must have "heard" it and got used to the same song so now he has to be sung the same lullaby to go to sleep.
Credits
"Lullaby" - Jopke designs *coming soon to DigiTop3.com*
TFL!