Can you teach your zebra finch to talk?

Zebra Finches can't talk, but one of my Pied Zebra Finches make a call that imitates the sound of an alarm. My Zebra Finches do answer me, though. When I walk in the door and say "Hi" to them, they chirp back. Zebra Finches can make beautiful calls, so without tricks, these cute little birds put on a show...with their singing!

Thanks,

Grace's Finch Care