2013 Sound of the Year: Pigs Munching Carrots

Most memorable: the contented grunts and the river-like wave of pigs munching carrots at Pigs Peace Sanctuary.

The five freedoms of animal welfare:
Freedom to express normal behavior.
Freedom from pain, injury and disease.
Freedom from hunger and thirst.
Freedom from fear and distress.
Freedom from discomfort. — Farm Animal Welfare Council, origins: Brambell Report, December 1965 

Mount Rainier National Park gets a runner up here for: bleating elk, whistling marmots, buzzing bees over those wildflower filled meadow, and clinking, sliding slabs of shale.

And in music:

Jami Sieber, Timeless, 2013 | Zoë Keating | IAMX, Volatile Times, 2013 | Servitor drums