# John Walker re-creates great performances

Imagine hearing great, departed pianists play again today, just as they would in person. John Q. Walker demonstrates how recordings can be analyzed for precise keystrokes and pedal motions, then played back on computer-controlled grand pianos.

- Kind: Talk
- Year: 2008
- Runtime: 13 min
- By: TED.com
- Genres: Education, Science, Music
- Archive: [Internet Archive](https://archive.org/details/JohnWalker_2007P)
- Licence or status: [CC BY-NC-ND 3.0](http://creativecommons.org/licenses/by-nc-nd/3.0/) (as the archive states it)
- Who can watch: Tweens profiles and older (the archive gives no rating; placed by Invisible Network from its collection and subjects)

[Watch now](https://invisiblenetwork.ai/watch/archive/ia/JohnWalker_2007P?play=1)