Wii Music is now out in Japan but how well did it actually sell on it's first day?

With Wii Music now out in Japan it has seen a very successful first day in terms of sales selling over 50,000 copies of the title. Though the sales could have been better for a Nintendo title it is surprising Wii Music sold the amount of copies it did in the first day as many don't regard it as a true game.

The question is now how well will it do in North America and Europe?