Playing the Market

I read about this on Slashdot. Sounds interesting.
Playing the Market is a recent experimental music recording by Emerald Suspension. The project features audio compositions based on patterns found in the stock market and in economic data.
"Long Bond" is a requiem string solo. Notes in this piece are based on the pattern of interest rates since 1926 as represented by the yield of the 30-year Treasury bond. Higher notes equate to higher interest rates and lower notes reflect the lower rates experienced over time.