If you're wondering why, it is rumored that Antonín Dvořák's Symphony To the New World was present on a cassette tape brought during the Apollo 11 moon landing mission. Although there's no proof that music was ever played at any point during that mission, the association between the music and the moon has metastasized in the age of the internet. Assume the Japanese people making these games both read the same Wikipedia article. But the music is also free to arrange and excellent, so no complaints from me!