You can find a nice selection of tabs here: http://ocarinatabs.wordpress.com/category/12-hole/
To create your own tabs based off sheet music, you can use the STL ocarina composer which lets you create your own tabs: http://stlocarina.com/fico.html
STL Ocarina has a book for 9 holed and above ocarinas
You cover the holes and blow on it. There are many free ocarina song websites on the internet. There's usually this one hole that you can't cover or it won't blow.
An Ocarina typically has between 4 to 12 holes. The Narnia Lullaby is played on a 6-hole Ocarina.
Smule ocarina is only a 4 hole. If you have a 4 hole then yes, others wise you have to know what flinging position equals what one different ocarinas. And different models sound different. I have a baby dragon tooth and it is higher pitched than the smule one.
look here, this is where i got mine http://www.stlocarina.com/ocarina-by-type-12-hole.html
A great site for Ocarinas is Songbird Ocarinas. You can pick up a 6-hole ceramic ocarina for only $13 minus P&H from there.
If you want to get it in the game, you have to finish the first three dungeons. If you want a real one, type in 'Ocarina' in google and click on the one that goes to Groth. They an ocarina like the one in the game.
when he sticks his head out of a hole smash it with the megaton hammer
I've found a couple of tabs for it. http://radioactivethundacat.deviantart.com/art/Lugia-s-song-6-hole-ocarina-210543708 http://www.ocarinaforum.com/index.php?topic=1121.0 hopefully this helps
if someone finds a loop hole in the experiment
You don't have to plant the bean. You have to go to the graveyard at night, pull on that guy's grave, go down the hole, and follow that guy. He will then give you the hookshot.
Many places. You'll get the most just searching "6-hole ocarina tabs". Or just look for any standard sheet music within it's 10 note diatonic range(if you can read sheet music). If you find tabs that use an ocarina that doesn't look like yours, don't worry, they should still work(if they are for a 6-hole pendant.