Consider something as obscure as Tuvan throat singing from Mongolia, where two notes are sounded at once.

FORBES: Fifth Anniversary

By expanding the size of the market, recording has stimulated Tuvan musical innovation as well as preservation of older styles.

FORBES: Fifth Anniversary

Tuvan, an indigenous tongue spoken by nomadic peoples in Siberia and Mongolia, even has an iPhone app to teach the pronunciation of words to new students.

BBC: Digital tools 'to save languages'