Kaye will play Mrs. Lovett for eight performances June 20-25, during LuPone's vacation, opposite Tony Award winner Michael Cerveris in the title role and his fellow 2006 Tony nominee Manoel Felciano as Tobias Ragg.

Kaye — who earned a Tony Award nomination for her turn in this season's Souvenir — won her Tony for The Phantom of the Opera. Other credits include Mamma Mia, Ragtime and On The Twentieth Century.

John Doyle directed the new Broadway staging of the Stephen Sondheim musical which began previews Oct. 3 at the Eugene O'Neill Theatre and opened Nov. 3.

In a new conceptual take on the vengeful barber, the tale of Sweeney Todd is retold in the confines of an asylum where a distraught Tobias Ragg is locked up. Using only nine chairs, a ladder, and a coffin on two wooden horses on a stage assembled of wooden planks, 10 actor-musicians recreate the characters and events of Victorian era Fleet Street.

The Sondheim score (with the book by Hugh Wheeler from a Christopher Bond adaptation) is performed (in full view of the audience) by the acting company, who play instruments ranging from tuba, trumpet and clarinet to cello, accordion and bass.

Kaye joins Cerveris, Felciano and original cast members John Arbo (musician on Good Vibrations) as Jonas Fogg, Donna Lynne Champlin (Hollywood Arms, James Joyce's The Dead) as Pirelli, Alexander Gemignani (Assassins) as The Beadle, Mark Jacoby ( Man of La Mancha, Show Boat) as Judge Turpin and Broadway newcomers Diana DiMarzio (as Beggar Woman), Benjamin Magnuson (as Anthony Hope) and Lauren Molina (as Johanna).

Tickets for Sweeney Todd at the Eugene O'Neill, 230 West 49 Street, are available by calling (212) 239-6200 or via the link below. For more information, visit www.sweeneytoddonbroadway.com.