This instrument is played with a reed. The structure of opening and closing sound holes is similar to that of oboe, and the range is similar to that of oboe. It should be a woodwind instrument, but the pipe is copper or brass. It has a delicate top and a thick mouth, much like a bass clarinet. There are many saxophones from bass to treble, and they are all transposed instruments. Saxophone timbre is extremely rich and charming. When playing strongly, it looks like a brass tube, and when playing weakly, it looks like a woodwind. It is the best partner for wind instruments.