I also sang professionally and it was a big part of my film scoring advantage since I could work and add voice or voices whenever I wanted.
I was also offered internal oral surgery, but chose to keep seeking after I researched that type of surgery. My voice had been damaged about ten years prior because of an incident where I needed to scream for help, in order to stop an attempted homicide and people didn’t come right away-( yes it was stopped).
I lost part a big part of my range from the incident. I used to have close to a four octave range and sang in choirs and groups in whatever needed position they had - that stopped after the screaming incident and my perhaps the unknown Eagle Syndrome shortened my range to just two octaves. Besides singing and playing lead tenor in a big band - I have also narrated films and acted as Kleopatra in a VR game - because of my voice. When I found this forum (which I am very thankful for BTW) I only asked about wind instruments because I was so sick I thought the voice side of me would be a lost cause. It wasn’t.
As of last week I am able to comfortably sing a D below middle C (concert). Sorry to be so technical, but there are several different schools of thought on how Octaves are numbered. That ‘D’ means I can sing the song ‘Wave’ in the key it is written! It also means I gained four notes in my lower end of range. I’m now just three notes short of three full octaves. This took about a full year after my last surgery, but one of my ES bones was actually fractured inside, so I had a lot of torn tissue to heal, including a couple of major arteries that were getting scraped on the outside (yes that gives me “the willies”).
I don’t want to upset you, but one of the deciding factors of my not getting the inter oral surgery type was because I read up on it and I watched a YouTube video of it. I did not like how the bone is cut, and how immediately goes back into the throat after the cut without looking at what kind of edge was created. I had a musical instrument repair biz for years and I know tools and materials. I do not know living bone, but I have worked with bone and ivory - I do not like how that surgery is done or its stats on infection.
What @Jules said about the other singer calling his surgery -not likely to be interoral, I concur. He had shown exterior shots of his incisions to me when I wrote to him before my surgeries and they were outside. Something to consider is how people often write shortly after surgeries while also on some gnarly drugs LOL.
If you are worried about scars, please don’t LOL. I had cold laser treatments for internal scar tissue, not throat, but within my muscles and ligaments. It took awhile, but the nasty scar tissue broke down. There was an added benefit - my scars now need to be pointed out to be seen. My doctor is very proud of herself, but I told her she’s ruined many of my jokes and also my “street cred” lol.
I had to fly three states away from my home three times in order to get a doctor with a good record of experience. It’s just two trips for most others that need both sides done. Before I chose my surgeon, I had a doctor at a teaching college near me drooling to do my surgery “inter oral”. I am normally a push over with other people’s wishes. This was a time to do what helped me. Others can learn the needed surgeries by assisting someone experienced, people with ES have been through enough. One of my specialist explained to me, that “no two necks are the same”. The nerves and muscles etc can be in slightly different places- it is not for the faint of heart to do the surgeries nor for someone just learning surgery in general. I have heard many stories since my surgeries and my mind is blown by how many times an “intern” was given this surgery to “learn from”. That’s another topic.
Please be selfish. I give you permission LOL.