From Metro Music Videos to Underground Hoe-Downs

 - Jun 6, 2009   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.

Implications - Thousands of people use the subway everyday all around the world. Advertisements are put up along walls and people look at them, but nothing gets a business more noticed than pulling a publicity stunt in the subway. There are tons of people around to watch the events unfold and it is a guarantee that at least one person will film it and post to YouTube.