Williams will put her vocal chops to the test in the live telecast this December.
The Tony Award-winning Genie will bring his magic to the set of the morning talk show.
Check out the list of theater stars whose television appearances from the past year made the cut.
The Tony winner is set for a special performance on July 15 in Minneapolis.
The show's next winner will get to bust a move in On the Town.
Breaking Bad writer Moira Walley-Beckett will produce the new drama.
Taylor stars as a conflicted actor in the theater-inspired dramedy.
In the Heights alums Lin-Manuel Miranda and Chris Jackson will duke it out in the same category.