What to sing for Beauty and The Beast , Into The Woods, and Oliver Auditions?

I really really want to get prepared early for these! I am a boy I know for Into The Woods I want to be Jack. I have an alto/tenor voice. What songs would be really good to sing? I want it to be in the range. I am 16 during this season i will be 16 or 17 what good parts are there in beauty and the beast and oliver? I mostly need help on songs. PLEASE HELP