Shahnaz Kikavossi (Afsaneh) was born in 1321. Due to his mother’s strong interest in music, he has been fond of traditional music since childhood. An orchestra is an ensemble, or group, of musicians who play a variety of instruments, including string, brass, woodwind and percussion. Generally, orchestras with fewer than 50 members are called “chamber orchestras,” while full-size orchestras of 50 to 100 musicians are called “symphony orchestras” or “philharmonic orchestras.” The number of musicians required typically depends on the piece of music being performed and the size of the performance location. Each group of instruments has a leader called the “principal.” The principal is responsible for leading the group and playing solos. The principal trombone leads the brass section, while the principal oboe is the leader of the woodwind section.