According to Sullivan, the first half of the concert will focus on European works and songs from different cultures, while the second half will be more familiar Christmas carols and holiday songs.
"Tickets are selling really well; the theater had to open up the balcony to accommodate more people," Sullivan said. "The boys are incredibly talented. They will be singing in eight different languages. It's an amazing experience."
Andy Icochea Icochea, who was appointed choirmaster in 2005, will conduct the concert.
Breckwoldt said each boy is seen as an individual, and the choir benefits from that because the quirkier and the more independent they are, the richer the sound they produce.
"We try to expose the boys to as many different styles of music as possible; the program vouches for that. You will hear Gregorian chants, Renaissance motets, modern music, but also, for instance, a song from Uzbekistan, or an ancient religious hymn from Peru, which is a blend of Quechua beliefs and Spanish Catholicism," she said.
Breckwoldt said the boys will entertain with more than just singing.
"In this program, there is some Austrian dancing, and the boys play instruments to accompany the songs. The choirmaster always takes into consideration each boy's special talents," Breckwoldt said.
The choir, which has been around for centuries, has a long touring tradition. According to Breckwoldt, the choir came out of the ancient "imperial chapel" -- which means they were the Emperor's choir -- and the Emperor used them wherever he could. The choirs would sing at state occasions, high festivals and whenever someone important enough to warrant an audience at the imperial court was in Vienna.
One hundred boys are selected for the choir's grammar school, where they participate in musical and academic programs. Academic lessons are taught in small groups. The school has a band and offers extracurricular activities ranging from sports to attending concerts, musicals and movies. All choirboys live in the choir's own boarding school.
Each boy is assigned to one of four touring choirs, which give about 300 performances a year. Each group spends nine to 11 weeks of the school year on tour. They visit almost all of the European countries, along with excursions to Asia, Australia and the Americas.
"Those who attend the concert can expect to be taken on a musical journey through time and through different countries, by the choir itself and a very engaging Peruvian choirmaster, Andy Icochea Icochea," Breckwoldt said. "And don't forget, performers always benefit from applause. The more you clap, the better the performance."
Tickets can be purchased at the Eisenhower Auditorium, the HUB-Robeson Center and the Bryce Jordan Center.