More video recordings of eerie, groaning, howling, trumpet-like noises that seem to come from the sky are still appearing on Youtube. Many more of these 'strange noise' videos have been recorded and uploaded by people from many different parts of the globe. They have been reported in the UK, Germany, Canada, U.S., Iceland, Netherlands, Brazil, Japan, Hong Kong, France and Russia, to name a few.

The cause of these strange sounds is still unknown. For your listening pleasure, we've captured the best of 2015 - so far.

Strange sounds happening again in Terrace British Columbia - 5/7/2015

Strange Sounds - Noises - Trumpet in Sky - in Kentucky - 5/5/2015

Strange weird trumpet sounds in sky of Iceland 2015 - 4/29/2015

Strange Sounds Heard in the Skies of Japan 2015 - 4/6/2015

Strange UFO sounds heard in Jersey City, New Jersey - 3/26/2015

UK: Strange sounds trumpets sounds dogs going mad - 2/10/2015

Strange sounds in the sky - Minas Gerais/Brazil - 2/1/2015

Strange mysterious sounds in Yosemite's National Park - 1/2/2015

So what is this? Earth changes? Hoax? HAARP? Signs of the apocalypse?