Tremble Clefs is a choral group providing music therapy for people with Parkinson’s disease. By participating in Tremble Clefs’ weekly rehearsals, those who live with Parkinson’s disease strengthen their voices and have fun singing with others in the Parkinson community, including family and care-partners. Tremble Clefs Arizona is comprised of two choral groups: one meets in Scottsdale and the other in Sun City. They are both directed by Sun Joo Lee. Ms. Lee has Master’s degrees from ASU in Music Therapy and in Voice Performance. Tremble Clefs Arizona is a nonprofit charity, a 501(c)(3) charity. The Original Tremble Clefs was founded in Scottsdale in 1994. The West Side Tremble Clefs was formed in 2008. The choirs will combine their voices for this performance.