September

https://www.youtube.com/watch?v=Gs069dndIYk

but...
since it's today, what's the best mix?

i stand by the Macross Delta one.
https://www.youtube.com/watch?v=B3nfweteZck

male version is also good but female one is just better.
https://www.youtube.com/watch?v=Dd6zQNZiewo

though the Snow Halation one is surprisingly good.
https://www.youtube.com/watch?v=ZFmv55_DsAE

and while today had a Eurobeat one debut, it isn't as good as i wish it was.
https://www.youtube.com/watch?v=3RcGCRTD7sA

and this debut is just cursed.
https://www.youtube.com/watch?v=0xBwWMMoq1E

for what it's worth, the green day ones are pretty common. but i like these the best:
https://www.youtube.com/watch?v=4FxgFBBShSg

https://www.youtube.com/watch?v=Htp86xNJViw