You do not need diablog to tell you it is Halloween. The retail stores have been full of merchandise for weeks.
But we can provide you with some classical music for the occasion:
Carmina Burana was composed by Carl Orff in 1935/36, so it isn’t that old.
I think it is a great piece to play at full blast, when someone is at your door for trick or treat. And should you ever have the chance to see it life, please go. It is one of the most impressive performances. The conductor has to lead some 300 to 400 people.
PS: Above is only a part, the whole can be watched for example here.