It's common for songs to have a bridge, but this may be the first time a bridge has had a song.
San Francisco's Golden Gate Bridge is said to have started singing.
The eerie noise coming from the famous structure is a result of recent maintenance work "designed to make the bridge more aerodynamic under high wind conditions", which is "necessary to ensure the safety and structural integrity of the bridge for generations to come", a Golden Gate Bridge spokesperson told CNN.
How loud is the bridge?
Putting into perspective just how loud the whistling has become, if it were the Auckland Harbour Bridge making the noise, you'd be able to hear it in Newmarket, Sandringham, Hillcrest and Pt Chevalier.
If the noise was instead a buzz coming from the Beehive, you'd be able to hear it from Johnsonville in the north, and Lyall Bay in the south.
With San Francisco being one of the tech capitals of the world, it's no surprise that the bridge has been a popular topic of conversation on social media.
"As much as I would've loved this eerie sound to be aliens coming for us, apparently it's the installation of new wind resistance railing that has turned the Golden Gate Bridge into a huge instrument that can be heard all around the Bay! Hypnotising," Shirin_Jnk posted along with a video of the noise.
The bridge was tweeted about tens of thousands of times over the weekend, with many describing the noise as "relaxing".
With no immediate plans to return the bridge to its previous, much quieter existence, San Franciscans are going to have to grow to like it - or do what tens of thousands of people do every day and get over it.
