The rundown
Once Upon a Time in Harlem (2026)
The same weekend also brings Street Fighter. Two trailers, one argument about which one wins the window.
It hits the big screen on October 16, 2026.
Reactr / Trailer Reactions / Once Upon a Time in Harlem
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In Theaters · October 16, 2026
Once Upon a Time in Harlem
Trailer Reactions
Scored from what 6 creators said on camera while watching the trailer, out loud, in their own YouTube reaction videos. A proprietary Reactr score. How the score works
PG-13
Documentary
A film over 50 years in the making.
A decade after his death, genre-defying filmmaker William Greaves has one last trick up his sleeve with what he considered the most important event he captured on film: a 1972 party he engineered with the living luminaries of the Harlem Renaissance.
Free · no editing · camera or voice only · the clip is yours to post
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The Trailer
The Once Upon a Time in Harlem trailer, ready when you are
Dropped September 3, 2026
Creator Reactions
What creators said about the Once Upon a Time in Harlem trailer
Creators posted 6 reaction videos to YouTube watching this trailer. Reactr scored what they actually said, out loud, on camera, and combined it into the Reactr Rating shown at the top of this page. All of the videos are below. How the score works.
What's going on, beautiful people? So, I said, What is this? Once Upon a
That That looks good. I'm about to start reading up on
I love comments and I love to learn about this
I can't wait to watch that. But uh yeah, good trailer.
William Greaves get a posthumous Oscar nomination for this. So check it out. It's
Oh, that looks pretty good actually. This fall it's not specific enough. Oh
Every reaction above is a creator's own upload on YouTube, credited to their channel. Reaction videos are found automatically; a creator can claim their page or ask for a video to be removed from the creator directory.
Reactr Verdict
Did Once Upon a Time in Harlem deliver on its trailer?
66The trailer
6 reaction videos scored. See them all
6 reaction videos scored. See them all
?The film itself
scored from reactions posted after release
scored from reactions posted after release
Verdict comingafter opening weekend
After release, creators post a second kind of video, their reaction to the film itself. Reactr scores those the same way it scored the trailer reactions and puts the two numbers side by side to answer one question: did the movie live up to its trailer?
Meet the cast
Who you’ll see in the trailer
On screen, it is Aaron Douglas, Richard Bruce Nugent and Ernest Crichlow carrying the story. Aaron Douglas plays Self (archival footage).
Aaron Douglas
as Self (archival footage)
Richard Bruce Nugent
as Self (archival footage)
Ernest Crichlow
as Self (archival footage)
Eubie Blake
as Self (archival footage)
Leigh Whipper
as Self (archival footage)
Arna Bontemps
as Self (archival footage)
William Greaves
as Self (archival footage)
James Van Der Zee
as Self (archival footage)
Behind the camera
The history behind Once Upon a Time in Harlem
Production is led by William Greaves Productions. Direction comes from William Greaves and David Greaves. Runtime is listed at 1 hour 40 minutes. It carries a PG-13 rating in the US.
What makes this one worth reacting to
This trailer was made to be reacted to
A documentary trailer sells the stakes of something that actually happened. React to the parts you did not know.
The opening weekend conversation gets written by whoever shows up early with something honest. Show up early.
Reactions on Reactr
Be one of the first to react
Reaction clips for Once Upon a Time in Harlem will appear here as Reactors share them. The Reactr recorder is free for creators: watch the trailer, record on camera or voice only, and the finished clip is yours to post on your own TikTok, Reels, or Shorts channel.
Record the first reaction →FAQ
Once Upon a Time in Harlem: quick answers
How do I record a Once Upon a Time in Harlem trailer reaction?
Open the reaction recorder on your phone at reactr.film/studio/once-upon-a-time-in-harlem, choose camera or voice only, and press record while the trailer plays. Reactr captures your reaction and gives you a share-ready clip when the trailer ends. It is free.
Do I have to be on camera?
No. Voice Reaction mode records your commentary with the microphone only: the camera stays off, no face is recorded, and you still get a share-ready clip for your channel.
When does Once Upon a Time in Harlem come out?
Once Upon a Time in Harlem is scheduled to open in US theaters on October 16, 2026. Dates can shift, so check back for updates.
Who stars in Once Upon a Time in Harlem?
Aaron Douglas, Richard Bruce Nugent, Ernest Crichlow, Eubie Blake and Leigh Whipper lead the cast, directed by William Greaves and David Greaves.
Is Reactr free?
Yes. Recording reaction clips on Reactr is free, with no paywall on the finished clip. You own your clip and can post it to TikTok, Reels, Shorts, or anywhere else. Reactr makes money from studios and sponsors, not from creators.
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Your first reaction only happens once
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