三、信息还原
There are many different kinds of music in the world that can bring us all kinds of feelings.
Classical music
This kind of music is a little serious but elegant(高雅的)，and it has lasting value.
1.
A
If you wish to learn this kind of music, you have to go through plenty of training.
Heavy metal（金属）music
The music came out in the mid-20th century. The melody（旋律）of the music is heavily influenced by its strong, repetitive structure and powerful rhythm. 2.
B
Hip-hop/Rap music
This music always includes the use of instruments such as the guitar, piano, drums and bass（低音吉他）. 3.
E
It has roots in African American and African traditions，and was first developed in the streets of New York in the 1970s.
Opera music
It first appeared in Italy in the 1600s. 4.
G
Not all music lovers are interested in this type of music because it's more professional（专业的）and not so easy to understand.
Jazz music
Jazz is a type of American music. 5.
D
So it usually sounds casual and relaxing. The main musical instruments are the cornet（短号），trumpet and violin，which help carry the melody and express strong feelings. Someone might think of it as a musical conversation.
Besides these, there are many other kinds of music such as the blues, country music and rock music. No matter what kind of music it is, it's sure to make the world colourful and amazing.
A. It is a form requiring high musical skills.
B. In heavy metal music, songwriting follows standard musical forms.
C. It is a type of music that only appears in Eastern countries.
D. Musicians freely play and create melo while performing.
E. In this type of music, the bass plays an important supporting role.
F. Most people are familiar with this type of music, as it is often played in daily life.
G. It has a great mix of theatrical art and musical invention and is used in theatres.
