When I was a young actor auditioning for Broadway chorus roles in the 1960s I learned this important rule: if the composer is at the audition, DO NOT SING ANY SONG THE COMPOSER WROTE. Example - if Stephen Schwartz is at the audition, do not sing any song from "Wicked", "Pippin" or "Godspell" The person who wrote it will have strong feelings on how the song should be sung and if, unknowingly, you sing it using a different interpretation than the composer has in their mind, there is a 99% chance you will not get cast.
Hi I'm auditioning for the role of Annie/Matilda/Lulu/Veruca/Gretel von Trapp/young Cosette (any of these) and I'll be singing "All You Wanna Do" from Six
Hi I'm auditioning for the role of Barbara Maitland and I'll be singing "Being Alive" from Company Hi I'm auditioning for the role of Velma Kelly and I'll be singing "Good Girl" from Head over Heels
"Hi everyone! I'm auditioning for the role of Heather Duke from the rock musical Heathers, and for my audition, I will be singing Mixtape from the popular comedy musical Avenue Q!"