You are so lucky! I'm dying to be in Les Mis! (No pun intended...I'm a Fantine hopeful.) It's always best to sing a song from a musical when auditioning for, well, a musical of course. You want to find a song that suits your voice as well as the style of the show and character you are auditioning for. My first guess is that if you are a soprano, you would be trying to land Cosette or Young Cosette. Well, I'm a soprano as well...shows how much first impressions can be incorrect. "Les Miserables" is written in the adult contemporary style: mostly ballads and has mature content. Think shows like:
Jekyll and Hyde
Miss Saigon (same composers as Les Mis)
Phantom of the Opera
Spring Awakening (not the best resource for a song because it's not Les Mis-ish musically)
As mentioned, look for a good "acting" ballad because Les Mis requires mature actors with strong voices. Start out with these songs:
Before I Gaze at You Again - Camelot (Cosette)
God Help the Outcasts - The Hunchback of Notre Dame (Fantine) ***"Hunchback" was also written by Victor Hugo, the author of "Les Miserables"!
I Know Him So Well - Chess (Eponine)
Ladies Who Lunch - Company (Madame Thenardier)
Little Lamb - Gypsy (Young Cosette)
E-mail me if you have any more questions or want more songs; I have a huge repertoire! Break a leg!
Musical Theatre Enthusiast, Soprano
my own repertoire