Xylophones come in a variety of sizes and shapes, but the most common type is the soprano xylophone, which has a range of two and a half octaves. Other types of xylophones include the alto xylophone, which has a range of three octaves, and the bass xylophone, which has a range of four octaves.
Xylophones are often used in orchestras, bands, and other musical ensembles. They are also popular as solo instruments, and can be used to play a wide variety of music, from classical to jazz to contemporary.