There’s certainly been a few discussions about vocal changes with ES, here’s a post I did a while back on a discussion:
‘There is a research paper mentioning voice issues with ES, it’s ‘Management of Dysphagia Pre and Postoperatively In a Case Of Eagle’s Syndrome by Lewis, Hoffman, Spector In 2015’. Also in Fusco, Asteraki, and Spetzler’s (Eagle’s Syndrome Embryology, Anatomy, and Clinical management, 2012) study, they mention vocal changes.
Cranial nerve 10 has been suggested as a nerve which could be compressed or irritated with ES; Motor branches of CN X are responsible for phonation, so compression of this part of the nerve could explain hoarseness or vocal changes.
In this discussion eagleheart says surgery cured her voice issues 
ES and voice problems
This is a current discussions about singers & voice issues:
Pro singer just diagnosed! So many questions… (and want to connect with other singers!)
MusicGeek has posted about her journey- she has been able to get back to some singing after surgery, but it’s been a difficult journey:
Are there any saxophonist or wind musicians out there?
There’s probably more- feel free to use the search function for the discussions!’
Here’s a link to that discussion if you want to read the full thing:
Voice hoarseness pain/ loss of voice - General - Living with Eagle
Hope this helps!
2 Likes