An ocarina store. I'm not joking. I have found one free place, but it's all fan made and most of it is for the 6 and 4 hole. But try songbird ocarinas under composer and then list ( I think ) you should find something there. Also, stl ocarinas has a ton of books, and so does the previous site I mentioned.
STL Ocarina has a book for 9 holed and above ocarinas
Most of the Ocarina of Time sheet music is only for 9-Hole or more Ocarinas. I'm not really sure where to get the music, but if you go to You-Tube And look up how to play Zelda's Lullaby look at the one by "HeathersOcarina" It should have a Link in the Description to go to how to play it.
If you check out the forums at theocarinanetwork.com they have some tabs. They could also point you in the right direction if they don't have what you want.
http://www.fl-oca.com/eng/fing.htm Does this help you?
More specifically, Low D, B, A, D, and F.
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.
look here, this is where i got mine http://www.stlocarina.com/ocarina-by-type-12-hole.html
Malon can teach one to you after you find her dad, Zelda and Impa teach you two, Shiek teaches you six, Saria teaches you one, A gravestone teaches you one, Zelda teaches you another one, and the guy who's in the windmill teaches you the last one.
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.
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
You crawl when you walk up to a hole in the wall, and 'Enter' will appear on the A button in the corner. Press it, and you are crawling.
Tr.y Songbird Ocarinas, when i bought mine that was the best website. They even have Zelda Themed ocarinas