A riddle about heavy metal music is:
 
Q: What kind of music do wind turbines like?
A: They’re big metal fans.
   
“What kind of music do they like? They are big metal fans” was posted on Twitter on February 26, 2014. “What kind of music do wind turbines like? They’re big metal fans” was posted on Twitter on June 19, 2016.
 
   
Twitter
ACRacebest ‏@ACRacebest 26 Feb 2014
This is where all the wind in California is produced.  Just look at the size of those fans! #phoenixbound #NASCAR
 
‏@rocgazelle
@AC_Racebest what kind of music do they like? They are big metal fans :D
6:30 PM - 26 Feb 2014
   
Twitter
James Eisenmenger
‏@eisenmerchant
@audiofeedfest - what kind of music do wind turbines like? 
They’re big metal fans.
1:17 PM - 19 Jun 2016
 
Reddit—Jokes
A wind turbine asks his friend what his favourite genre of music is
submitted June 20, 2016 by HFPerplexity
To which he responds: “I’m a big metal fan.”
 
Twitter
Tanner Giddens
‏@tgidds
So I asked a windmill what kind of music it liked. It responded “Im a big metal fan”
12:38 AM - 21 Jun 2016
 
Reddit—Jokes
Two windmills are standing in a field and one asks the other, “What kind of music do you like?”
submitted June 22, 2016 by Wolfey1618
The other says, “I’m a big metal fan”
 
Twitter
Duncan
‏@hdpadgett3
@mojoneill1 What music do windmills like to listen to?  Well, they’re windmills, they are big metal fans.
7:00 PM - 8 Jul 2016
 
Reddit—Jokes
So two windmills are standing in a field…
submitted October 12, 2016 by [deleted]
Two windmills are standing in a field and one asks the other, “What kind of music do you like?”
The other says, “I’m a big metal fan.”
 
The Amazingly Lame Joke of the Day
Wednesday, December 14, 2016
What kind of music do wind turbines like?
They’re big metal fans.
Posted by Tim Wycislak at 5:54 AM