The two most common starting times for concerts are in the evening, about eight o'clock, and in the afternoon, at about three. Some concerts happen only once, so you have only one chance to hear them. Other concerts are given repeat performances. A big-city symphony orchestra will typically play the same music two or three or four times in a week. The following week they will play different music.
Some concerts recur annually.
There are groups that perform Handel's Messiah , or Bach's Brandenburg Concertos , or Tchaikovsky's Nutcracker ballet, every year. Concerts come in many different sizes, but most last between ninety minutes and two hours. Noontime concerts can be as short as forty-five minutes, and children's concerts are short, too. Some concerts last longer than two hours, as do many ballet and opera performances. Sometimes there is more than one intermission.