D minor is really the saddest of all keys

People often refer to music as a "universal language" that transcends culture, and here's a study that seeks to explore the concept:

Cognitive Daily: Even isolated cultures understand emotions conveyed by Western music

The debate over how and why different modes of music convey different emotions still exists - in its most basic form coming down to, why people identify (most) music in a major key as being 'happy' and (most) music in a minor key as being sad.

D minor is really the saddest of all keys