These came out of a search, so might have been previously covered in a post:
This review covers music performed in groups and is not directly related to Parkinson’s: Collaboration and improvisation
Music performance is inherently social. Most music is performed in groups, and even soloists are subject to influence from a (real or imagined) audience. It is also inherently creative. Performers are called upon to interpret notated music, improvise new musical material, adapt to unexpected playing conditions, and accommodate technical errors. The focus of this paper is how creativity is distributed across members of a music ensemble as they perform these tasks
This article does cover Parkinson’s – singing as a way to help with vocal issues and depression. Positive results, but not a randomized control type experiment, so conclusions are tentative:
Individualized singing program
Here’s an interesting experiment in which participants are asked to improvise music which reflects varied feeling states. Not sure how the results can be applied, except that creating music or dance/movement to express emotions is probably of benefit to the brains of people with Parkinson’s, regardless of the strength of the research.
Effects of music making
This study has gotten some wide distribution – on how musicians (people who play an instrument) react more quickly than people who do not. This article digest is from Science Daily (January 2017)
“fine” as they say on the sheet music.