This is the concert you have been waiting for.
I call it "Choral Fantasies".
Beethoven did call his piece, "Choral Fantasy", but Carmina Burana is also a choral fantasy -- a choral piece with a lot of fantasy in it.
There are a lot more similarities between these pieces than one might think:
They are both joyous and fun.
Both have uncomplicated harmonies and melodies.
There is lots of C major in both!