K3 Musical: De 3 Biggetjes 2003 Synopsis - Stage registration of the Belgian musical by Studio100. The Belgian girl group K3 play the three little pigs Knirri, Knarri and Knorri, who are ravaged by wolves. The father wolf Baltimoor encourages his three sons to catch the three little pigs, in order to prove their capability as a wolf. However, the three sons Wupert, Waldo and Willie encounter unforeseen developments.