This episode of “Osiyo, Voices of the Cherokee People” combines four stories with a common thread: the Cherokee language. Mack Vann only speaks Cherokee, and, here, he expresses his hopes and concerns about the future of the language and Cherokee way of life. Jerry and Robert Bigfeather share how the sound of Appalachia fiddling made its way to the Cherokee Nation. Dennis Sixkiller, host of “Cherokee Voices, Cherokee Sounds,” visits with Cherokee speakers on his weekly radio show. And Cherokee National Treasure Dorothy Ice tells us about her background and how she became an admired weave.