The 35th Wall to Wall concert is set to begin at 11 AM and will continue for 12 hours at the New York City landmark. As of press time, those scheduled to take part in the gala event include Karen Akers, George Lee Andrews, Michael Arden, Ivy Austin, Becky Ann Baker, Kate Baldwin, Christine Baranski, Barbara Barrie, Laura Benanti, Polly Bergen, Rob Berman, Pat Birch, André Bishop, Blair Brown, Sidney J. Burgoyne, Kate Burton, Liz Callaway, Mario Cantone, Carolee Carmello, Patrick Cassidy, Michael Cerveris, Ted Chapin, Barbara Cook, Charlotte d'Amboise, Christina Dahl, Jason Danieley, Sam Davis, Jed Distler, Gregg Edelman, Melissa Errico, Raul Esparza, Harvey Evans, Chris Fenwick, Danielle Ferland, Leonard Fleischer, Freda Foh Shen, Alexander Gemignani, Joanna Gleason, Annie Golden, Randy Graff, Debbie Gravitte, David Green, John Guare, Mary Rodgers Guettel, Jonathan Hadary, Todd Haimes, Sheldon Harnick, Hudson Shad, Dana Ivey, Francis Jue, The Juilliard Choral Union (conducted by Judith Clurman), Judy Kaye, Marc Kudisch, Judy Kuhn, James Lapine, Darren Lee, Telly Leung, Andrew Lippa, Emily Loesser, Patti LuPone, Richard Maltby, Mackenzie Mauzy, Marin Mazzie, Lanny Meyers, Brian Stokes Mitchell, Beata Moon, Mark Nadler, James Naughton, Phyllis Newman, Daniel Jay Park, Mary Beth Peil, Bernadette Peters, Kurt Peterson, Lonny Price, Charlie Prince, Patrick Quinn, Angelina Reaux, Sarah Rice, Frank Rich, Tony Roberts, Marti Rolph, Josh Rosenblum, Jonathan Schwartz, Thomas Z. Shepard, Matt Sklar, David Staller, Marsha Perry Starkes, Georgia Stitt, KT Sullivan, Christina Sunnerstam, Kathleen Supové, Thom Warren, John Weidman, Joss Whedon, Richard White, B.D. Wong, the Ying Quartet, Nora York, Eric Jordan Young and Jerry Zaks.

The schedule for the afternoon, according to the official Symphony Space website, follows:

"11 AM-12 PM
Greetings and Overview
Isaiah Sheffer
Mayoral Proclamation
Proclamation of “Wall to Wall Stephen Sondheim Day”

Into the Woods
An excerpt of the Music Theatre International’s Broadway Junior production, introduced by MTI CEO Freddie Gershon

Some Early Sondheim
Early works including “The Two of You” and “A Very Short Violin Sonata” 12 PM-2 PM
(simulcast on WNYC and hosted by Jonathan Schwartz and Bernadette Peters)
Company
Featuring Gregg Edelman, Sarah Rice, David Staller and Richard White

A Funny Thing Happened on the Way to the Forum
Introduced by Jerry Zaks and featuring Michael Arden, Jonathan Hadary and Sheldon Harnick

Discussion: The Art of the Cast Album
Jonathan Schwartz hosts a discussion about Sondheim cast albums with Tommy Krasker and Thomas Z. Shepard

Solo Turns
Performances by Liz Callaway, Marsha Perry Starkes and KT Sullivan

More Comedy This Afternoon!
Featuring Kate Burton, Gregg Edelman and Phyllis Newman

The Ying Quartet
The Ying Quartet performs “Children Will Listen” and “Children and Art” arranged for string quartet by Andrew Lippa
Solo Turns:
Performances by Karen Akers and Kate Baldwin

2 PM-5 PM
A Talk with Steve
Jonathan Schwartz leads a discussion about collaboration with Stephen Sondheim, James Lapine, Bernadette Peters and John Weidman

Scenes and songs from Sunday in the Park with George
Introduced by James Lapine and featuring Melissa Errico, Raul Esparza, Dana Ivey, Mary Beth Peil and Bernadette Peters

“Two-Piano Concertino”
Performed by Christina Dahl and Beata Moon

Follies
"Follies Suite," arranged for two pianos by Jed Distler, performed by Jed Distler and Kathleen Supové
Songs from Follies, introduced by Ted Chapin and featuring Michael Arden, Kate Baldwin and Thom Warren

Scenes and songs from Pacific Overtures
Introduced by John Guare, and featuring cast members of the recent Pacific Overtures revival

Passion
Introduced by Richard Maltby, and featuring Michael Cerveris and Judy Kuhn

The Ying Quartet
The Ying Quartet performs “Night Waltzes” arranged for string quartet by Michael Starobin

Nora York puts her inimitable stamp on Sondheim

5 PM-8 PM
Sondheim and American Popular Culture
Frank Rich moderates a discussion with Stephen Sondheim and Joss Whedon

Between-Shows Broadway
Solo performances by Broadway stars dashing uptown between Saturday performances, including George Lee Andrews, Carolee Carmello, Joanna Gleason, David Green, Judy Kaye and James Naughton

Assassins
Introduced by Todd Haimes and featuring Becky Ann Baker, Sidney Burgoyne, Patrick Cassidy, Michael Cerveris, Alexander Gemignani, Annie Golden and David Green

The Ying Quartet
The Ying Quartet performs “Fear No More,” “I Know Things Now” and “Losing My Mind” arranged for string quartet and voice by Georgia Stitt, and featuring Kate Baldwin, Angelina Reaux and David Staller

Sondheim and Lyrics
Discussion with Jason Robert Brown, Richard Maltby and Georgia Stitt

Merrily We Roll Along
Introduction by Leonard Fleischer and Lonny Price, and featuring Ivy Austin, Sidney J. Burgoyne, Danielle Ferland, Alexander Gemignani and Emily Loesser

Sondheim the Waltz King
David Shire introduces performances of Sondheim waltzes by Randy Graff, Hudson Shad and Beata Moon

8 PM-11 PM
Orchestral Segment
Paul Gemignani leads a full orchestra in Sondheim favorites featuring Michael Arden, Ivy Austin, Kate Baldwin, Christine Baranski, Laura Benanti, Polly Bergen, Blair Brown, Michael Cerveris, Barbara Cook, Jason Danieley, Gregg Edelman, Raul Esparza, Harvey Evans, Randy Graff, Debbie Gravitte, Hudson Shad, the Juilliard Choral Union, conducted by Judith Clurman, Marc Kudisch, Emily Loesser, Patti LuPone, Mackenzie Mauzy, Marin Mazzie, Brian Stokes Mitchell, Kurt Peterson, Patrick Quinn, Marti Rolph and Thom Warren"

Admission to the concert is free, and patrons may sample a few moments or stay several hours. Symphony Space began its Wall to Wall series in 1978 with Wall to Wall Bach. Later versions of the marathon concept have focused on Mozart, Beethoven, John Cage, Aaron Copland, Cole Porter, Irving Berlin, Leonard Bernstein, George Gershwin and Richard Rodgers.

Composer-lyricist Stephen Sondheim has written a plethora of musicals, including A Funny Thing Happened on the Way to the Forum, Company, A Little Night Music, Into the Woods, Merrily We Roll Along, Sweeney Todd, Sunday in the Park with George and Passion. He also contributed lyrics to West Side Story and Gypsy, and his new musical, Bounce, recently played Chicago and the Kennedy Center for the Performing Arts. His revised productions of The Frogs and Pacific Overtures were on Broadway stages earlier this season, and the 2004 staging of Assassins won five Tonys, including one for Best Revival of a Musical. Sondheim was also celebrated at the Kennedy Center with all star stagings of six of his musicals — Company, Sweeney, Merrily, Night Music, Sunday and Passion.

Wall to Wall Stephen Sondheim will play the Peter Jay Sharp Theatre at Symphony Space, located in Manhattan at 2537 Broadway at 95th Street. For more information, visit www.symphonyspace.org.