The capabilities of the human voice have been thoroughly explored by Burbank, CA-based singer/songwriter and speech pathologist Joanna Cazden. While she's performed everything from Appalachian folk tunes to Yiddish songs, Cazden's greatest successes have come via her work with speech disorders. In addition to working in the voice and speech departments at Cedars Sinai Medical Center, Cazden has lectured throughout the United States. She presented such programs as "Arts Medicine and the Folk Performer," delivered at the National Folk Alliance Conference in 1993, and "Body/Mind ...