"The best way to spread Christmas cheer is singing…

“The best way to spread Christmas cheer is singing loud for all to hear” is a saying that has been printed on many images. The line is from the movie Elf (2003), written by David Berenbaum. The movie starred Will Ferrell in the title role and was filmed in New York City.

Wikipedia: Elf (film)
Elf is a 2003 American Christmas comedy film directed by Jon Favreau and written by David Berenbaum. It stars Will Ferrell, James Caan, Zooey Deschanel, Mary Steenburgen, Daniel Tay, Ed Asner, and Bob Newhart. It was released in the United States on November 7, 2003 by New Line Cinema. The story is about one of Santa’s elves (Ferrell) who learns of his true identity as a human and goes to New York City to meet his biological father (Caan), spreading Christmas cheer in a world of cynics as he goes.

IMDb (The Internet Movie Database)
Elf (2003)
Quotes
Buddy: Sounds like somebody needs to sing a Christmas Carol.
Jovie: No way.
Buddy: The best way to spread Christmas Cheer, is singing loud for all to hear.
Jovie: Thanks, but I don’t sing.
Buddy: Oh, well, it’s just like talking, except longer and louder, and you move your voice up and down.
Jovie: I *can* sing, I just choose *not* to sing. Especially in front of other people.
Buddy: If you can sing alone, you sing in front of other people. There’s no difference.
Jovie: Actually, there’s a BIG difference.
Buddy: No there’s not. Wait…
[Starts singing loud and off-key]
Buddy: I’m singing/I’m in a store/and I’m siiiiiingiiiiing!/I’m in a store/and I’m siiiiiingiiiiing!
Gimbel’s Manager: HEY! There’s no singin’ in the North Pole!
Buddy: Yes there is!
Gimbel’s Manager: No there’s not!
Buddy: We sing all the time!
Gimbel’s Manager: No you don’t!
Buddy: Especially when we build toys!
[Back to Jovie]
Buddy: See?

7 November 2003, NPR, “Review: Jon Favreau’s new film, Elf.” Morning Edition:
(Soundbite of “Elf”)
Mr. FERRELL: (As Buddy) It’s just nice to meet another human who shares my affinity for elf culture.
Ms. ZOOEY DESCHANEL: (As Jovie) I’m just trying to get through the holidays.
Mr. FERRELL: (As Buddy) Get through, Christmas is the greatest day in the whole wide world.
Ms. DESCHANEL: (As Jovie) Please stop talking to me.
Mr. FERRELL: (As Buddy) Uh-oh, it sounds like someone needs to sing a Christmas carol.
Ms. DESCHANEL: (As Jovie) Go away.
Mr. FERRELL: (As Buddy) The best way to spread Christmas cheer is singing loud for all to hear.
Ms. DESCHANEL: (As Jovie) Thanks, but I don’t sing.

21 December 2003,

(Bridgewater, NJ), “Remembering the true meaning,” pg. S11:
Spread Christmas cheer
I like the holidays because they are fun. Last Christmas, I played with Steven. We both had fun when we were sliding down the hill. The best way to spread Christmas cheer is to sing loud for all to hear. Every holiday is fun. I know that I will have fun this year.
Brett Defazio

Twitter
olivia
‏@0livia
The best way to spread Christmas cheer is singing loud for all to hear!
11:39 AM - 24 Dec 2006

Google Books
The One Year Father-Daughter
Devotions
By Jesse Florea, Leon C. Wirth and Bob Smithouser
Carol Stream, IL: Tyndale House Publishers, Inc.
2012
Pg. 349:
In the movie, Buddy says, “The best way to spread Christmas cheer is singing loud for all to hear.”

That may be true. But another good way to spread Christmas cheer is with a good joke.

YouTube
Christmas Cheer
Damn Dog Productions
Published on Mar 16, 2013
“The best way to spread Christmas cheer is singing loudly for all to hear”. A video dedicated to Christmas spirit and clips from several movies and tv specials in the holiday spirit.

Google Books
Christmas:
Theological Anticipations
By Adam C. English
Eugene, OR: Cascade Books
2016
Pg. ?:
The way to reenergize the Christmas spirit and spread Christmas cheer, as it turns out (in the movie Elf—ed.), is to sing loudly for all to hear.