Nálepka “market”

The Dow Piano

The daily trading of the Dow Jones industrial average determines the songwriting here, translating the ups and downs of 2010’s market into musical notes. Using a five-note scale spanning three octaves, pitch is determined by each day’s closing level.

Heavy trading volume – most notably on the day of the May 6 ‘Flash Crash’ – leads to high musical volume. Notice the piano tends to play quietly around holidays. The notes are generally clustered in series of five, representing Mondays through Fridays.