Ethiopia is a musically traditional country. Popular music is played, recorded and listened to, but most musicians also sing traditional songs, and most audiences choose to listen to both popular and traditional styles. A long-standing popular musical tradition in Ethiopia was that of brass bands, imported from Jerusalem in the form of forty Armenian orphans (Arba Lijoch) during the reign of Haile Selassie. This band, which arrived in Addis Ababa on September 6, 1924, became the first official orchestra of Ethiopia. By the end of World War II, large orchestras accompanied singers; the most prominent orchestras were the Army Band, Police Band, and Imperial Bodyguard Band. Most of these bands were trained by Europeans or Armenians.