Final answer:
The second sentence in a text usually offers background information or context, supports or develops the main idea, or provides contrast to enhance readers' understanding of the narrative or argument.
Step-by-step explanation:
The function of the second sentence in the overall structure of a text is important as it develops context, supports the main idea, or provides contrast. For example, in literature, a second sentence might offer background information about a character, setting, or prior events, thereby helping readers understand subsequent actions or reactions.
Alternatively, it could also serve to create a contrast or reveal a character's thoughts or feelings, similar to the second sentence in the provided example about a character named Crocket and her song "Rock-a-Bye Baby". This sentence's purpose might be to critique the character's judgment or to provide insight into her creative process or decisions made during her career as a musician. However, without the full text, it is challenging to determine the exact function with absolute certainty.