What is cascada's favorite colour?
Cascada's favourite colour is actually.....
Blue (but she also likes purple)
'Cascada' is actually the group's name, Natalie Horler(who you are refering to in this question) is just the main singer for the group. She is often wrongly referred to as Cascada (I'm not sure of the specific word for this, type either Cascada or Natalie Horler into Google and click on the Wikipedia page and it will tell you this)
Soz for correcting you but it just annoys me when people think that. Sorry