This study will include individuals who complain of a softer speaking volume due to their diagnosis of Parkinson's disease. Participants will receive the standard of care for voice therapy for persons with Parkinson's disease. Voice therapy will be provided three days a week, one hour per session, for 6 weeks. At the start and end of treatment, participants and their caregivers will complete surveys and questionnaires. The surveys and questionnaires will tell us about the impact of your Parkinson's disease diagnosis on the family unit, spousal relationship, communication, and quality of life. Three months after treatment ends, participants and caregivers will participate in a brief structured interview to discuss the supports and barriers to maintaining the vocal exercise program.