Tonehammer has released Holy Ambience, a free sample pack as part of the Gnomehammer Celebration series of freebies.
This library was created by heavily, heavily, heavily manipulating a tiny, tiny slice of a certain old Christmas masterpiece, performed by an unknown genius.
Like a precious and rare unstable element, only the smallest quantity is needed to unleash the true raw power contained within. Christmas power.
Each of these 11 ambiences features multi-layer cross-fading and filter morphing for full expression and dynamic control. They can also be used individually as background drones, since each one is a standard format wav file with embedded loop points.
Holy Ambience is available as a free download.
More information: Tonehammer