How to solder piezo-speaker

[Blanka]

One of my new handhelds, a Gakken/CGL Frogger, has no sound.
I found out the wire to the piezo-speaker has come off.
Any chance to solder that? It seems it connects to the ceramic side, which is non-metal. Is that wire glued on normally? What glue can you use?
Otherwise I have to buy a music greeting card or so and rip a replacement one out of there.

[liquidx]

Tin the wire, put a small drop of solder on the ceramic part, then solder them together.

Don't leave the iron on the disc for long though, be as fast as you can.

[Blanka]

Just for those interested:
On RS-online they sell a bag op piezo speakers for 5 euro or so. They are encased in black plastic, but the 30mm ones contain 27 mm discs used in most handhelds. You can just strip of the plastic, and put them in you muted handheld.