Electrically Charged Music

I am looking into the history of Concertos. They tend to be a showcase of a particular instrument acoompanied in various ways by an orchestra. (That's an original sentence. you can borrow it, but i expect to be credited!)
 Today I've looked a little at a work by on of Bach's sons featuring the Harpsichord, another by Josef (I don't know why he isn't called by his first name - 'Franz) Haydn featuring the Cello and, just now - because I often end up coming back to this piece - Elgar's Cello Concerto. The link below is recording of it featuring the now deceased Jacqueline Du Pre (I don't know how, but the 'e' on Pre ought to have an accent.) I encourage you to have a listen. If you've not much time, start with the first few minutes:

http://www.youtube.com/watch?v=681NvqpO2eU

I have to say, it is utterly stunning. It is electrically evocative. It is inescapably British but not (in my view, and perhaps with the benefit of the passage of time) patriotic, or nationalistic. Jacqueline made the cello fizz with energy and power. I find it interesting how the orchestra play in time, but not in time. They play phrases, or snatches of melodies in time, but with the freedom to include almost invisible pauses and lilts - like breathing, if that makes sense. This performance has a certain solidity, or unity between performers, so that throughout the many variations and changes of mood and volume, etc. the overall sound is completely together. That last sentence was a little boring, but there's something in a group of musicians who are really well rehearsed and are on completely the same wave-length. they can make something more than the notes on the page.

anyways, someone is walking around closing all the blinds on the library windows. It's making me think I ought to wind things up here... hope you enjoyed elgar. Let me know what you thought.