Because that's already a redirect for the standard Music app?
My guess is that the team developed the site without knowing whether they'd have permission to deploy it on *.apple or not, so they put apple in the domain basename and it was deemed not worth it to take it out once they knew the deploy target. Just guessing, though.
My guess is that the team developed the site without knowing whether they'd have permission to deploy it on *.apple or not, so they put apple in the domain basename and it was deemed not worth it to take it out once they knew the deploy target. Just guessing, though.