—Yeah. It is reported that some factories will be ____________soon.

There are many different kinds of music in the world. Now let's study some of them.

Classical music  Classical music is a form of music which needs high musical skills. If you want to learn this kind of music, you have to go through proper training.

Heavy metal music  Heavy metal music came out after World War Ⅱ. The melody（旋律）of the song is heavily influenced by the structure of it. It is also known as"information music". In heavy metal music, song writing is based on a form.

Hip-hop music  This kind of music always includes the use of instruments such as the guitar, violin, piano, bass（低音电吉他）, drums and so on. In this kind of music, the bass is the main instrument. It was first played by a group of traveling singers and poets of West Africa.

Opera music  It first appeared in Italy in the 1600s. It has a great mixture of theatrical（戏剧的）art and musical invention and is used in theaters.

Jazz music  This kind of music has strong and complex melodies. The main musical instruments are the cornet, trumpet and violin, which help carry the melody.

Besides these, there are many other kinds of music such as the blues, new-age music, Celtic music, religious music, and chamber music.

What power does music have? Band of Hope, a student band in the US, once again brought joy with their music to young patients at a local children's 1. "The children really get a lot from 2 with other children in the community, "said Ashley Boguszewski, a specialist at Pediatric Specialty Care （a nursing specialty organization for children）.

The seventh and eighth graders at Hopewell Junior High School formed the band 3. On May 27, they were already playing their sixth concert, performing to 20 children at the hospital. The band members 4 hosted a story time for the patients and brought small 5 for them to play.

The band's 27 members meet once a week for a 6 practice after school. Each month, the band heads to Pediatric Specialty Care to perform a mini 7. They play popular music such as songs from the movies Frozen and The Little Mermaid.

Eighth-grader Liam Watters, 13, plays the baritone（男中音）in the band. During one concert, he 8 that one of the patients 9 to listen to the singing, so he and a few other band memberswent back to the patient's room and 10 to him.

"That was really 11, "Liam said. ""They had big smiles 12 their faces. "

"We're hoping that it's something that grows and becomes an even 13 part of our culture here, "said Kerry Wilson, director of the band. "It really 14 a sense that we're all one community and good citizenship 15. "