Why was it that novels and TV dramas were only for adults and young people, while music was something everyone liked to listen to?

This question involved many aspects such as culture and consumer psychology. Fictions and television dramas were literary works that were often presented differently according to different audiences. For example, some topics were suitable for adult readers while others were more suitable for teenage readers. Similarly, some novels and TV series might present more mature and complicated plots, while others might be more relaxed and humorous. In addition, the audiences of novels and TV series could also be affected by geography, age, gender, cultural background, and other factors. In contrast, music had a wider audience, whether it was teenagers or adults. The forms and styles of music were also varied, from pop music to classical music, from rock and roll to folk songs, all of which could satisfy the preferences of different groups of people. In addition, the music consumption was often dependent on the audience's own interests and preferences to choose their favorite music. Therefore, the different audiences of novels and TV series and the wide audience range of music were caused by many factors such as culture and consumer psychology.