IMO - RCV increases the power of voters while decreasing the power of the 2 major parties. With "first past the post" voters only get to choose between lesser of 2 evils.
The Open Song Android App can handle PDFs and changing pages is, if I remember correctly, a quick flick of the finger.
The developer, Gareth, is super responsive and open to suggestions.
Check it out.
https://www.opensongapp.com/
Reading the discussion here. I'd never heard of xmpp. Probably just never registered as a messaging alternative. Just checked out https://xmpp.org/. Wow! Tons of apps. Even some android apps on fdroid. Guess I've got some exploring to do.
Right, IMO First Past The Post being good enough has led to more partisanship, extremism and polarization. It has increased the power of money and decreased the power of We the People.
I agree about cutting away the drywall. Easy to fix after, especially since inside a cupboard. I would avoid touching with metal and wear insulated gloves I think.
Found this https://blog.truefire.com/wp-content/uploads/2010/11/guitar-chord-chart.png