because I don’t know if this article will be available when I return in 2013:
Classical ringtones strike the right tone with Nokia. After a recent study showed that classical music ringtones were the most popular, they hired the 55-piece Bratislava Symphony Orchestra to create 25 original classical tunes for Nokia Lumia models.
Ringtones and signature sounds are criticial for most companies to establish brand recognition. Nokia is no exception. The pieces were originally composed by their in-house sound designers, who worked to get the compositions just right before the orchestra finished the pieces.