i used "green finch and linnet bird" as one of my audition songs (i have the same type of voice as you....high lyric soprano, but also a high belt) - BUT ONLY WHEN WE WERE SUPPOSED TO BRING ACCOMPANIMENT ON TAPE (NYU does this). all other places i used "what good would the moon be" from street scene.
for my belty song, i used "shy" from once upon a matress and "danny kaminsky" from Danny&Sylvia (but don't try to get this one, it's not released. the composer is a family friend and he owed me a favor for saving his dog...but a song LIKE this one would work very well).
and i agree with everything ddtruitt said. in full.
"grace, you're stuffed in a box getting rid of ass plaque. let's face it, this evening is a bust."