At the moment (BQ E5) the sound Marimbach is used for reminders. There is no option to change this sound for another. 1. I vote for an option where a default sound for reminders can be set. 2. It should as well be possible to set a reminder sound for each individual reminder (like alarms). 3. MAYBE some people would even find it useful to have a default reminder sound for each notebook.
At the moment (BQ E5) the sound Marimbach is used for reminders.
There is no option to change this sound for another.