[Tubalew]

Thanks for sharing this. I had been using a page turner ring from Amerteer when using MobileSheets with my tablet and tuba. It was able to be set up without any of this, but the battery stopped holding a charge after 6 months. I tried the ring you showed but couldn't figure out that I had to unchceck "Enter Annotation Mode with Stylus" for it to work. I returned it and ordered a 5 button one:

 

This had a similar issue. I decided to search to see if anyone had success with these and found your post. After unchecking stylus it works exactly as I wanted. It just means that when I annotate my music I have to manually activate the stylus. 

My only issue with this is that the buttons are a little small, but it's easier for me to use this than to try to get my feet in the right place when holding a tuba.