A combination of the 1st, 4th, 6th, and 7th Harry Potter books.
The idea of A Very Potter Musical started when the creators of Starkid were wondering what would've happened if Draco had fallen in love with Hermione at the Yule Ball.
The cast learned "Voldemort is Going Down" only 3 days before the show opened.
Joey Richter was cast as Ron almost immediately after finding a tacky red wig in a thrift store and trying it on for fun.
During the last performances people would come hours in advance just to get in line.