The piano on the sandbar

How did the baby grand piano wind up on a sandbar in Florida's Biscayne Bay?

Kind of like the way pianists get to Carnegie Hall, it turns out: Practice, practice, practice.

"Why?" gets you a more complicated answer.

The apparently definitive tale, from the Miami Herald:

http://www.miamiherald.com/2011/01/26/2036256/piano-mystery-solved-movie-prop.html