You will absolutely need the flute for this zone. Best make sure you have it already, or have 250 gems in order to purchase it! Also, when starting the zone, you will need the Glove of Wisdom
Hidden Room 1
Right after the checkpoint you get to after doing the scales, proceed as normal towards the jump flower. You will see (from the screenshot) the cloud that will lead you to the Shortcut Eagle. DON'T LEAVE THIS AREA OR TALK TO THE SHORTCUT EAGLE YET!
Hidden Room 2
Hopefully you heeded my warning in the previous hidden area. You'll see more tree platforms leading to the top of the hills. At the top is a gap you can place a bomb at to reveal a hidden shop.
Hidden Room 3
Progress normally through the scales area and on your way to the first dojo. The two jump flowers is the area for the next Hidden Room. Look to the wall to the right and you will see where you need to jump!
Hidden Room 4
Right after the second dojo, with the scale in it, set down on a bomb on the top most hill shown. Go in and STAY INSIDE to get to your next hidden area.
Hidden Room 5
Chuck a bomb at the wall shown and you'll make it to the next hidden room/ledge.
Hidden Room 6
At the outer rim of the dojo with the gong, you will see a tree that leads you up a hill and over a few stories of the dojo. You will need to get the roof (via clouds as well) and jump over to the hill shown. Bomb the middle and drop in. Obviously need to stay in this room.
Hidden Room 7
Inside the room is a wall you can bombed as well which leads to the chest.
Hidden Room 8
Make your way back to the top of the hill (I know such joy). Now it is time to make use of that flower you saw. Run past the hillbillies near the end of the hill and make your way through the forest maze to the raccoon boss. You'll see a discolored patch of land so BOMB IT FOR BEING DIFFERENT!
Hidden Room 9
This is the room you need the flute for. Play the song in the water and net your last secret room for Zone 2.
Click the Waypoint to jump to the guide on Zone 3!