Opera - what is the name of this piece?

[garycat]

Starting at 23 seconds into this cartoon.

http://ww​w.youtube​.com/watc&...

[bigandclever]

Link is broken.

[garycat]

Oops - try again - http://www.youtube.com/watch?v=eNMEF70GIc4

[kiteless]

It's based on the Toreador song from Bizet's Carmen