Hmm, deciding which song to take to vocal coach

Next week I will meet my vocal coach (poor woman...). Until then I´m supposed to have selected a song to sing - beautifully - to her, hehe.
Any suggestion on how to make this choice?
Been thinking about:
Avantasia´s "Another angel down"
Royal Hunt´s "Another man down", "Half past lonliness" or "Show me how to live".
Why not Masterplan´s "Enlighten me"?? Loooove it!!!

Tricky question....