From Metro Music Videos to Underground Hoe-Downs

By: Bianca Bartz - Published:   Updated: Mar 31 2011
The diversity in subway innovations we've featured is truly astounding. It will open our eyes to the peculiarities of the world underground.

Not necessarily always pertaining to transit, subway innovations range from incognito artists who sketch fellow passengers on ticket stubs to entertainment artists dedicated to lightening people's moods below the city's surface.