根据所给汉语提示，写出空缺处单词正确形式。
1. My father likes listening to the _____ (经典的) music.
2. Many students can sing _____ (流行音乐) music.
3. He looked _____ (悲伤的), because his grandfather died yesterday.
4. Mary is a _____ (美丽的) girl.
5. Qiao Yu is a great _____ (作曲家), and he made a lot of beautiful music.