From experience, it's easier to use lead and lag dynamic compensators than pure differential and integrating amplifiers. You should be able to find the circuits on the web or in a good book on control.

If you do choose to go with a PID circuit, be aware that the classical circuits for one of the amplifiers (think its the differentiator, but it was a few years ago!) isn't very stable. The solution is to put a capacitor (I think) across one of the resistors – this solution came from 'The art of electronics', which has most, if not all, of the circuit diagrams and info in it that you'll need in any case!

Probably the best thing about the USA is how its culture encourages artists and supports them. Not just musicians, but all artists.

No

The paranormal, for all intents and purposes, is a huge lie people made up to scare little kids at night. Don't take their bs.