The communicative purpose of the text is to persuade the readers or listeners that learning English through music and songs can be very enjoyable , that the idea is important matter, and to analyze the topic that the thesis/opinion is correct by developing an argument to support it.

Based on the provided description, the communicative purpose of the text is to persuade the readers or listeners that learning English through music and songs can be very enjoyable. The text aims to convince the audience that the idea of learning English through music and songs is important and effective. The text also analyzes the topic by developing arguments and providing supporting evidence to reinforce the thesis/opinion. Therefore, the text is persuasive and argumentative in nature, with the intention of convincing the audience to adopt the writer's viewpoint on the subject matter.