TAP DANCING DELIGHT: Watch the grandfather and his granddaughter's entire performance A 10-year-old girl and her grandfather are tap dancing their way into hearts.

Tell me about tap dance, though. This is sometimes considered a kind of old-fashioned art form. Aaron Tolson: Old fashioned, for sure. I mean, tap dancing was born here in America.

The challenge of casting the Encores! revival of “The Tap Dance Kid” exposes some of the complications of tap, show business and Black history.