Tony Award-nominated Marc Kudisch takes a leave from the Marquis' Millie Jan. 27-April 28 to play Carl Magnus in New York City Opera's A Little Night Music, announced to play in rep March 7-29. Kudisch exits the hit Millie after the Jan. 26 performance. Sieber continues in Millie to April 27.

The cast of the Tony Award-winning Best Musical, Millie,includes Tony Award winner Sutton Foster, Angela Christian, Harriet Harris, Ken Leung, Francis Jue, Anne L. Nathan, Gavin Creel and Sheryl Lee Ralph.

Sieber's credits include Broadway's Beauty and the Beast (Gaston), Triumph of Love and Madison Square Garden's A Christmas Carol.

As the stuffed shirt Mr. Graydon, wealthy object of desire for gold-digger Millie, Sieber gets to sing music by Victor Herbert and Arthur Sullivan, interpolated for special effect. Most of the show's score is by composer Jeanine Tesori and lyricist and co-librettist Dick Scanlan.

The Marquis Theatre is at Broadway and 46th Street. For ticket information, call (212) 307-4100.