Cello, Burnette Dillon, Gary Grant, Rick Baptist, Mario Guarneri, Warren Luening, Malcolm McNab, Roy Poper & Dave Washburn.Musicians: Vage Ayrikyan, Andrew Cook, Anthony Cooke, Matthew Cooker, Steve Erdody, Christine Ermacoff, Paula Hochhalter, Todd Hemmenway, Rowena Hammill, Douglas Davis, Barbara Hunter, Dennis Karmazyn, Armen Ksajikian, Timothy Landauer, Roger Lebow, Dane Little, David Low, John Walz & Sebastian Toettcher.Music Recorded at: Sony Pictures Studios, Conway Recording Studios, Ocean Way Studios.Music Copyists: Phil Azelton, Russell Bartmus, Leland Bond, Tom Calderaro, Bob Calderwood, Tom Brown.Music Recording Assistants: Greg Dennen, Tom Hardisty, Bill Kinsley, Susan McLean, Rail Rogut.Music Preparation: Jo Ann Kane Music Service.Orchestra Contractor: Sandy De Crescent.Music Production Supervisor: Tod Cooper.Music Editors: James Flamberg, Charles Paley.Orchestrations by: Don Davis, Bruce Fowler, Randy Newman.Additional Music and Conducted by: Randy Newman and Louis Fabre.Production Accounting: Kris Wonzniak, Susan McDonald.Legal & Business Affairs: Peggy Lisberger.Animation: Jun Lamapano, Lani Barcelona, Lito de Lara, Raymond Romero, Man Pinza, Jojo Monteron.Production Executive: Frank Sapperstein.Backup Vocals: Ivy Austin, Steven Burns, Nick Balaban, Michael Rubin, Christopher Cerf, Tish Sommers, Maretha Stewart, Seth O'Hickory.Wilson and Allyce Beasley as Singing Letters Maurice LaMarche, Khary Payton, Gregg Berger, Peter Cullen, Brian Cummings, Townsend Coleman, Brad Garrett, Lauren Tom, Neil Patrick Harris, Nancy Cartwright, Ian Ziering, Cam Clarke, Cree Summer, Bill Fagerbakke, Michael Bell, Jill Talley, Clancy Brown, Jason Marsden, Glenn Shadix, David Hyde Pierce, Jane Leeves, Mary Jo Catlett, Larry Miller, Wayne Knight, Thomas F.Laura Bailey, French Stewart, Rino Romano, Jim Cummings, Craig Ferguson, Tom Kane, Diedrich Bader, Tara Strong, Rodger Bumpass, Grey DeLisle, Hank Azaria, Candi Milo, Daran Norris, Kevin Michael Richardson, Tino Insana, Dee Bradley Baker, Maurice LaMarche, Robbie Daymond, Nika Futterman, Curtis Armstrong, Harry Shearer, John Michael Higgins, Dan Castellaneta, Steve Blum, Vanessa Marshall, Quinton Flynn, Matthew Lillard, Anndi McAfee, Sarah Freeman, Dan Armitage, Sarah Moree, Thomas March, April Eathewn, Sebastian Milward, Callie Wilson, Riley Swift, Jenny Vettel, Josh Morris, Elena Armheart, Hank Knight, Tracy Vo, Lewis Marquez, Tara Nyguenn, Ryan Greer, Lily Foxzie, Toronto MacAxler, Zainab Edgerlynew, and Eric Freebob as Letters.Additional Voices: Reed Waxman, Jimmy Flinders, Tommy Cummings, Christopher Clancy, Andrew Kline, Alissa MacNeal, Loren Manda, Anne Hankins, Vince Del Castillo, Elaine Nickleton, Chester Kimes, Bobby Pauler, Marty Feldman, Johnny Madison, Kevin Richardson, Thomas Kennerton, Allen Landerson, Christiane Crawford, Cindy Robinson, Henry Gifford, Ginny Westcott, Jeff Bennett.Cast: Reed Waxman, Marie Danielle, Mark Cacciatore, Anthony Mozdy, Loren Manda, Dee Dee Green, Henry Futterman, Rachel Adams, Mary Jo Rogers, Michael Mendelson.Voice Recording Director: Ginny McSwain, Bruce D.Sheet Directors: Barbra Dourmashkin-Case, Eric Peterson, Karen Peterson, Laurie Wetzler.Storyboard Artists: Bob Fuentes, Eric Lusk, Tom Riggin, Rafael Rosado, Matthew Stroup, Mark Swan, Joe Vaux, Tim Wolkiewicz, Bryon Vaughns, Mark Zoeller.Character & Prop Design: Virginia Hawes, Tom Rubalcava, Richard Ory.Color Designers, Kimberly Bitsui, Ellen Jin.Background Design: Dan Fausett, Poe Tan, Dean Thompson.Songs Written by: Brian Mann, Craig Doblin, Jeanne Parson.Production Assistants: Matthew Stroup, Siobhan Vivian.Post Production Supervisor: Tom Gleason.No Letters were harmed in the making of this video.Music Composed by: Brian Mann & Craig Dobbin.Educational Consultants: Robert Calfee, Ph.D., Anne Cunningham, Ph.D., Deans Kells, Ph.D., Ruth Nathan, Ph.D.Based on the Concepts Created by: Mike Wood.