Light both of the torches in the room with the bells. Just use the torches to the left of that room.
The song of light in spirit tracks is used to light up the diamond crystal switches and the song of discovery is used to find hidden treasure chests.
There is no shovel in Spirit Tracks, but you can play a song on the spirit pipes that brings buried treasure up to the surface
in the snow realm
beat frazz
Leave them alone
It's in the forest temple.
Try here: http://www.zeldadungeon.net/Zelda13-spirit-tracks-walkthrough-10.php
This will answer evrything for you: http://www.zeldadungeon.net/Zelda13-spirit-tracks-walkthrough-06.php
shield eating monster
ocean temple (3rd one)
It is a whip not a rope and it is in the sea temple
iv got and completed spirit tracks but you will have to define "the orb" if you mean the sand wand, you get that after getting to the dune temple