I encountered follwoing sentence

> という音葉は胸にしまっておく。

And I think that 葉 is probably just misspelling, i.e. は entered twice instead
of once. But I'm not sure. Can someone help?
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2018-10-13T09:33:12.257
62165
2018-10-13T09:33:12.257
30982
question
words spelling
Possible misspeling of 音葉?