Norwegian Icebox

Origin
In Scandinavia, many herders employ the music of kulning to call down their livestock from high up in the mountain grasses. Similar to yodeling, its high pitch allows the herd to hear the return calls over long distances. It can also be employed to scare off predators, but in very rare circumstances.

Effects
Always covered by a perpetual layer of frost, opening the icebox allows the user to replicate any animal call. However, they will be unable to speak in conversation if their words do not follow some convention of music, such as rhyme patterns or beats.