First of all I'm slightly embarrassed to say I had deja vu while reading that fic. I sounded an awful lot like Severus the last time I went to a concert with my friends wayyy back in... May? 'Why's it called Party in the Dark if they've got spotlights on?' 'Those lyrics don't make sense!' Etc *sniff* oh dear, and not a potion in sight to help me.
I join Clare in asking about the Gaga reference- I thought maybe Bad Romance?
As to the biblical reference prism bit? Not. A. Clue.
I enjoyed your burst of creativity. You guys should go clubbing more! Please *bats eyelashes prettily*