Touch senors plus software controlled sounds: HELP

Projects General Guidance
1

My team hasn't hired a programmer or electrical wiz yet, so in the meantime I am looking for guidance from people who know! Personally have never worked with controllers, only analog simple circuits.
This is an art sculpture...

There are 10-20 touch sensitive points on the sculpture. Each one would be programmed to light up and produce a different sound when touched. (Arduino programmed to communicate with software)

Does each point need its own arduino?
Or can they all be wired to a single arduino with each different sound assigned to its specific point?
Also anyone have a favorite and trusted touch sensitive capacitor they've used for projects?

I know these questions are all pretty broad, but your knowledge is everything! Please share what you know!

2

Does each point need its own arduino?

No, you can do it with one.

Also anyone have a favorite and trusted touch sensitive capacitor they've used for projects?

Do a bit more research, touch capacitors are not easy to use in an installation like this.

Each one would be programmed to light up and produce a different sound

Lighting is easy, producing a sound is not so. You can use the Lady Ada wave shield to generate sound though it is your best bet.