Take the "A" Train

From today's New York Times:

In celebration of the 75th birthday of the A train, the first subway line both owned and operated by the city and the only one with an instantly recognizable jazz standard named after it, the Metropolitan Transportation Authority strung together a train of pre-World War II subway cars and ran it from one end of Manhattan to the other and back.

While you're reading the article here, you can listen to some songs about subways, including 4 versions of the Ellington classic "Take the A Train".