The tone of the saxophone
  Median saxophone E Median saxophone (Alto Saxophone), Vertical conical tube, The bell mouth bends upward into a pipe shape. 25 standard keys, No buttons), Among them ,11 regular closed keys; By combining 23 different keys, The 49 definitions that make up this note, In semitone, Play out 33 different pitch in this tone. In fact, the practical range includes two half octaves. To facilitate the following description, b7, of the lowest tone in the range of the central saxophone 7. Call the range low; The upper octave 1-7 is called the bass zone; Then up an octave 1-7 range called the middle area; The last half octave of 1-#4 is called the range of the treble area. The scale of the simple spectrum is divided into seven main sounds 1234567, (b) Use of common pronunciation in teaching materials do re mi fa sol la si (available online); The semitone's name is from Mr. Gao's chart of the first tone at the end of 100 books on the saxophone, Du #2Li #4Fi #5Su #6Di .#1