The Newberry County Sheriff's Department in South Carolina is fielding calls over a mysterious siren noise, which is the sound of emerging cicadas.

It has a weird alien squiggly sound." "The last song 'Brain Folds' has saxophone, weird talking and drums. It has piano, R2-D2 sounds, and a weird alien siren with bass." ...

Brits have been told to 'keep your cool' as the emergency alert causes phones to emit a siren-like sound during the UK-wide test, which is only the second of its kind ...

While there are plenty of strange moments in Alien: Earth's first two episodes, the one that takes the cake is the buzzing sound Wendy hears.