Encore comes from the French Encore une fois  meaning "once again".

We have looked at the physics of sound and how musical instruments make their sounds by standing waves.  We have also looked at how physics is used in the CD player.  Below is a concept map of how the bits fit together.

Now I shall be putting on my bow-tie to go to conduct the RTO who will play the world premiere of my newly commissioned minimalist piece, The Unstarted Symphony.