For the BathCamp evening event on 21st July 2009 (http://bathcamp.ning.com/events/bathcamponified-3-minutes-one), we asked people to present on "the one technology which has blown you away more than any other".
Rather than choose Spotify, the iPhone or Gmail, I instead picked the piano as my technology: something I've enjoyed playing for (ouch) more than 30 years.
Here, in slides which I tried to present in less than 3 minutes, are some of the reasons why.