Kookaburra

From Tardis Wiki, the free Doctor Who reference

Kookaburra was a traditional nursery rhyme. Trish Webber sang it to calm down her daughter Chloe whenever times got tough. The song's calming effect on Chloe was able to subdue a monster based on a drawing of her father. (DW: Fear Her)

Behind the scenes

Kookaburra