Found this reference to a study involving autistic children.
Since Parkinson’s is a movement disorder, it stands to reason that music would be beneficial to both groups as a therapy (and it is).
“Highlights
● A growing body of evidence suggests that motor impairments are frequently present in children with autism.
● Music therapy along with physical activity might benefit children with autism.
● We observed a significant difference between the experimental and control group after applying music therapy along with play therapy.
Plain Language Summary: Children with autism show motor impairments. Music therapy along with physical activity is a significant treatment in improving motor coordination. In this study, 30 children with autism were participated in 15 music therapy sessions. Music therapy are presented in two methods: (a) inactive one; listening to music and (b) active one; playing and rhythmic movements. Based on the results, motor coordination was achieved in the posttest.”
Directly related to Parkinson’s is this research paper on data-driven subtyping of PD:
“466 patients with idiopathic PD were investigated and three subtypes were identified. Subtype I (Mild Baseline, Moderate Motor Progression) is comprised of 43.1% of the participants, with average age 58.79 ± 9.53 years, and was characterized by moderate functional decay in motor ability but stable cognitive ability. Subtype II (Moderate Baseline, Mild Progression) is comprised of 22.9% of the participants, with average age 61.93 ± 6.56 years, and was characterized by mild functional decay in both motor and non-motor symptoms. Subtype III (Severe Baseline, Rapid Progression) is comprised 33.9% of the patients, with average age 65.32 ± 8.86 years, and was characterized by rapid progression of both motor and non-motor symptoms. These subtypes suggest that when comprehensive clinical and biomarker data are incorporated into a deep learning algorithm, the disease progression rates do not necessarily associate with baseline severities, and the progression rate of non-motor symptoms is not necessarily correlated with the progression rate of motor symptoms.”
In other words, everybody’s Parkinson’s journey is unique.
bob's brain: living well with a movement disorder and other comorbidities 