Final answer:
The excerpt from the article 'Changing Times' follows a descriptive text structure, detailing the social and political backdrop influencing African music during a period of change.
Step-by-step explanation:
The text structure that best fits the title and excerpt given from the article published in 1959, "Changing Times", is description. This structure is evident in the way the paragraph describes the social and political changes occurring in Africa at the time and how these changes are influencing African music. It provides a backdrop against which the music of the African people can be understood, discussing the dynamic atmosphere of urbanization, and how urban experiences are shared within more rural areas, thereby shaping cultural expressions such as music. This excerpt does not compare and contrast, nor does it focus on a sequence of events or delineate a cause and effect relationship specifically, but rather describes the social circumstances relevant to African music.