"Hey ffpp33, it's ok., this is Quiz, I know the full answer and classical samples in it. :-)
You're right about Toccata and Fugue by Bach, then we have Johannes Brahms - Hungarian Dance No. 5 and Rossini - William Tell Overture, Final.
But we don't search separated classical pieces here, just the name of this whole project. It's actually pretty easy, I'll post another part with lyrics if no one finds it soon and will be solved in a minute. :-)
Hey ucouldh, it's not Kimera!
Another part with classics: https://vocaroo.com/wDDz1N24Of9"