Strange sounds from the sky...what could it be?

Several people across the globe have claimed to hear weird noises sounding like a trumpet or a collective from a brass section of an orchestra coming from the sky.And the eerie sounds have been continuously heard at all different times and locations for almost a decade.
The first video posted on YouTube recording the unusual, unearthly sounds, was in 2008 when a user recorded the strange sounds in the sky from Homel, in Belarus.That same year another anonymous user shared the 'ear-deafening' sounds that they insisted 'were not a hoax,' from a quiet neighborhood believed to be in the U.S.A video from Germany taken from a window pans onto a street and shows a child frozen still as the chilling sounds echo over the landscape. And in Salzburgh in Austria the noise is magnified across the Eastern Alps.
People were making speculations about what the sounds may probably be. Could it be aliens, construction works, HAARP weapons, atmospheric pressure, shunting trains or maybe the seven trumpets of Heaven.

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