Voice & Singing Join our CommunityWelcome to APDA - Greater St. Louis Chapter Tremble Clefs Sing at home with Tremble Clefs! Videos for voice warm-ups and exercises. The Tremble Clefs of Greater St. Louis’ mission: To address the vocal and respiratory issues that come as a result of Parkinson’s (for example: a decrease in vocal volume, inefficient breath support, loss of vocal color-monotone voice) To improve posture, balance, and mobility through movement to music Offer its members an enjoyable and supportive social outlet Promote PD awareness through singing Voice Classes We periodically hold voice maintenance groups for graduates of the LSVT-LOUD program, or those that want to work on their voice and speech. Call us at 636.778.3377 to learn more.