“What do you call a documentary about trombones?”/“A slide show.”

A trombone riddle was posted on Twitter by Shamp Puns on November 17, 2014:
 
Q: What do you call a documentary about trombones?
A: A slide show.
   
   
Twitter
Shamp Puns
@ShampPuns
What do you call a documentary about trombones?
A slide show.
6:46 PM · Nov 17, 2014·Twitter for Android
 
Twitter
auroracommunityband
@auroracommband
Q. What do you call a documentary about a trombone?
A. A slide show
All (terrible) jokes aside. Here… https://instagram.com/p/8KEkGrKtAw/
12:19 PM · Sep 28, 2015·Instagram
 
Twitter
allis
@alicewilliyams
what do you call a documentary about a trombone player? a SLIDEshow
6:55 PM · Nov 21, 2015·Twitter for iPhone
 
Twitter
Steve from Providence
@FromProvidence
Replying to @MutsTrombone @kirkmin and 2 others
What do you call a documentary about a trombone? A slide show!! Ooooooo!
9:57 PM · Jul 6, 2018·Twitter for iPhone
     
Twitter
Ken Scherer
@Kas585
I’m writing a documentary about trombones- well, it’s actually more of a slide show.
8:58 PM · Sep 25, 2018·Twitter for iPhone
 
Reddit—Jokes
u/Tryh4rdLds September 18, 2019
What do you call a documentary about a trombone
A slideshow
 
sorry its kinda trash
COMMENTS
catonmyshoulder69
what do you call a documentary about toilets?
A shitshow.