Coke Piano project!

Hello, fellow arduino users! I want to build a Coke Piano like in the video below:

But in my city we don't have capacitive sensors.
Is it possible to build this kind of project without special sensors?
I heard about arduino library Sensor, but don't know if it usable for this project.

up!

Isn't he just using the capacitive touch capability of the Mega?
Have you clicked "Show More" and taken a look at what's in the other links?