Erickson also used the digits of pi (as well as the constant e) as the basis for the melody of his Pi Symphony, which was performed by the Omaha Symphony Orchestra Chamber group and by Ruse Philharmonic of Bulgaria last year.

CNN: STORY HIGHLIGHTS

When I was a teenager I saw a website suggesting pi could be a song, with one as middle C, two as D, three as E, etc.

CNN: On Pi Day, finding strength in numbers