I stumbled across these youtube videos of people recording strange sounds they heard recently. Some of them were from 2011 but most of them were during the first weeks of 2012. These strange trumpet-like sounds have been recorded all over the world, from Canada, Uzbekistan, USA, Costa Rica, Ireland and even Kota Samarahan, Sarawak. Call me gullible but these sounds are freaking scary, man.
This is from Ireland:-
And this is from Sarawak: