This is the link to the study that showed a correlation between reduced SA severity and double reed wind instruments such as the oboe or bassoon. https://www.medpagetoday.com/meetingcoverage/apss/14647 It was not found with singers or other wind instruments and other studies that did not differentiate between the type of wind instrument found no significant differences. Keep in mind that these instruments are really tough to play and the sample was with professional musicians who practice many hours a day. I would recommend the didgeridoo which is easy to play (even if not very well) and incorporates circular breathing which may or may not be a critical feature or an added bonus. As a mediocre (and that is being charitable) didgeridoo player myself, I can tell you it is a lot of fun.
I also use my CPAP regularly, including taking it with me during frequent travels and using batteries when I camp or otherwise do not have electricity. My only reason for writing this note is the reference to not being able to use the CPAP when nose is totally plugged. It only happens to me once every few years but I keep one full face mask that I use when it does occur. That allows me to breath through my mouth. Prior to that, I slept without the CPAP and it was okay but this is much better. Since I use it so infrequently, I should get by with just the one. Of course, I clean it thoroughly since I am sick when I use it.
I use a battery when I go hiking and camping. I usually bring 2 and recharging is not always an option. If you do not use the humidifier, the battery will last a lot longer. Make sure you have a car charger adapter as well as a plug in.