Answer:
D. True
Vocal music is indeed an important aspect of African music, and it is common for performers to embellish the music with various vocal techniques such as adding extra notes, using falsetto or shouting the words. These techniques are used to add expressiveness and emotion to the music and to create a sense of unity and connection between the performer and the audience. Additionally, it is common for African music to incorporate a variety of percussion instruments, string instruments, and wind instruments, which are often played in an improvisatory and expressive manner.