Learning to speak again
There is something called a patter song. It is created by placing too many words into a very short time interval, and setting it to music and seeing what happens.
Patter songs are simply fun. For any one who wants to speak more clearly and more professionally, I recommend learning one of the patter songs and reciting it out aloud.
When fully comfortable with the style of delivery, choose a non-judgmental friend or family member and recite the patter song to them and ask for constructive insights.
For those of us with PD it becomes even more essentially that we use the voice or lose it. Speaking can be a struggle for PWPs but it is worth it if a PWP can find the energy and concentration to learn to patter and thus turn around one symptom of PD.