Last year, I had the core music theory/performing/etc. classes at 8:30 every other day (it was all that combined into one class). Morning classes are definitely not my thing, especially as we listened to - and performed - extremely complicated stuff. I really do love experimental music and such, but several times, we listened to death metal/people literally screaming, noise music, and other really obscure stuff, and I just didn't like it at 8:30. Then I'd always go back and listen to it later, and I always loved the stuff - but not early in the morning like that. Of course I'd always need to be awake enough for when my other classmates came in with the assignment for that day, and we performed/sight-read them.
However, I did not mind Political Science class at 8:30, which was a lecture class (only 15 students, but still a lecture class). Had that class been in the afternoon, I for sure would have fallen asleep more than once.
In a perfect world, lecture classes in the morning, and more hands on classes in the afternoon, not the other way around.
On the contrary, however, I also don't do well super late at night, either, especially after a long day. Twice in the last year I have fallen asleep on the bandstand - while playing - because it was very late and I had not taken a nap that afternoon. This semester, I always took an hour-long nap before choir and combo rehearsals, which worked very well.
I, and most of the rest of the class, managed to sleep through a whole course on Botanical Anatomy.
It was scheduled straight after lunch, so we all had full bellies, and it was held in the coldest room on the campus, next to the air-conditioning plant of the Library. We basically all went straight to sleep as soon as we sat down.