Six years into spearheading Princeton’s annual Pi Day celebrations, Mimi Omiecinski has noticed a shift in the way the town approaches this annual event celebrating its famous former resident, Albert Einstein.

“It’s like the town is now the conductor of Pi Day,” said Ms. Omiecinski, a transplanted southerner who heads Princeton Tour Company and brought Pi Day, an event celebrated in communities worldwide, to Princeton in 2010. This year’s commemoration is Saturday, March 14, which is the famed theoretical physicist’s birthday and also happens to be the numeric equivalent (3.14) of the mathematical constant Pi. Events will take place all day at the Nassau Inn, Princeton Public Library, and other locations throughout town.

“It’s planned, it’s organized, but it’s almost like jazz in that everybody takes their own interpretation,” Ms. Omiecinski continued. “The people who run the non-profits organizations, and the merchants — they’re the unsung heroes. I put it on, but everybody does their own thing.”

Einstein lived in Princeton, mostly at 112 Mercer Street, for more than two decades when he was affiliated with the Institute for Advanced Study. The man who came up with the theory of relativity and won the Nobel Prize for Physics was also an unassuming resident who liked to take long walks and ride his bike through town.

This year’s Pi Day events include the familiar pie-eating contest at McCaffrey’s Market, the Pi recitation, the Einstein lookalike contest, and rides on the Dinky train with an Einstein re-enactor. But every year brings a new set of sub-themes. One that has recently captured Ms. Omiecinski’s attention is music. Einstein was passionate about music and was an accomplished, if amateur, violinist who played with the community’s orchestra.

“He loved playing the violin. People have suggested that he wasn’t particularly great at it, but he was committed to it,” said Ms. Omiecinski. “He played because he loved it, for the love of music.”

Several events on Saturday will pay tribute to Einstein’s musical proclivities. The first is at 9:30 a.m. at the Nassau Inn, when The Westminster “Chorchestra,” an ensemble of young cellists aged 11 to 17 from Princeton’s Westminster Conservatory of Music, will play works by Bach, a Renaissance piece, and two “Sailor Dance” melodies. Next is a “Kids of All Ages Violin Exhibition” sponsored by Princeton Symphony Orchestra, featuring children aged three to six, many of whom may come dressed as Einstein.

Miss Amy, a popular area musician who entertains children, will do a “Fitness Rock & Roll” interactive concert at noon, while Kids Music’Round will lead a parade at 1:59 p.m. to celebrate Pi. The first 314 people to assemble will be led in a circular path through Palmer Square, ending up with music back at the Nassau Inn. At the Princeton Public Library from 2 to 3:30 p.m., Kip Rosser will give a concert on the theremin, the first fully electronic musical instrument, which is played without physical contact from the hands of the player.

Other activities throughout the day include a chess demonstration, a self-guided Pub and Grub tour of Einstein’s favorite hangouts, two “Happy Birthday Einstein” parties held by the Historical Society of Princeton, a “Once in a Lifetime Teacher Video Contest,” a bike tour, a Kenken lecture and demonstration, a cocktail-making class at the Peacock Inn, and a mini-production of Steve Martin’s play Picasso at the Lapin Agile.

Local merchants will be pricing certain items at $3.14. Commemorative bracelets will be on sale to benefit the Princeton Education Foundation. More than 9,000 people are expected to descend on the town for the celebration, said Ms. Omiecinski. To keep up, she has hired Roy, her favorite local taxi driver, to ferry her from venue to venue during the day.

“There are Pi Day celebrations all over the place, but ours is the only one that takes place in the place where Einstein actually lived,” she said. “What I love about Princeton’s Pi Day is that we have something different every year in addition to the signature events. There is a real, sincere passion for this celebration.”