American rock band Fall Out Boy recenly sent eager fans in a craze after asking Chicago fans to silence their phones in a cryptic post with a video and a list of addresses of movie theaters in the Windy City.
Yes, you read it right - it only includes Chicago cinemas. But thanks to a brave rule-breaker who recorded what's happened in theaters that day, we got to see what the fuss was all about without having to fly across the globe.
The band has also posted another cryptic photo - one that shows a picture of a big wave - on their Instagram account with the caption, "april 28th april 27th."
Whatever is that 15-second preview's about - a new single, a music video or new album, at least we all know something is definitely coming from the band on April 28!
What do you think FOB is up to? Tell us in the comments!