I have the "traditional" ocarina (OOT shaped) it has about 10 holes, can play just over an octave, I can play quite a few tunes on it, but I haven't learnt sharps and flats properly.

Don't buy the replicas guys, mine was blue, OOT shaped and plastic, for £5, the replicas are about £50, the only advantage they have is ceramic and a Triforce symbol.

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Wow, I just realised my entire sig was out of date...