If you are given that much freedom, sing a song you really love and do well in! You don't have to look for the next unknown "On My Own".
Auditors want you to do well and they want to enjoy your "performance". Sing what you love.
"The hours between twilight and darkness belong to the makers of music and tellers of tales." - Pagan saying /
"We are the music makers, and we are the dreamers of dreams." - Willy Wonka /
"Theatre is life, film is art, TV is furniture." - Unknown from internet