Charice sent in a special message for her mentor David Foster:

Hi David!
Congratulations on your first US tour this October/November. I’m so honored to be able to join you – it’ll be my first US tour too : ) So cool that we’ll also be celebrating your 60th birthday - I call it the David Foster birthday tour! It's so great that the audience will get to hear all your great music and some of the great talent you’ve discovered. You’re the Hitman!!!

-Charice : )