A small orchestra is a musical ensemble consisting of a small number of instruments, typically between 12 and 40 musicians. The term 'small orchestra' can refer to a variety of ensembles, including a BAND, a sinfonietta, and a twelve-piece BAND. A BAND is a group of musicians playing brass, woodwind, and percussion instruments. A sinfonietta is a small orchestra that typically performs classical music. A twelve-piece BAND is an ensemble of twelve musicians playing a variety of instruments, usually including strings, brass, and woodwinds.