There are many kinds of musical instruments, music room, the teachers had to teach, and the students understand, if not, ask a teacher, but the teacher said not to loud and do not play in open learning.
Chamber music with many instruments, teachers teach and students to understand, if not, ask the teacher, but the teacher said he was not loud, and do not play in the classroom.
The music room there are many instruments teacher's teaching and students to understand if not get asked the teacher but the teacher said in no noise and no playing in the classroom.