The mouth is described as small yet perfectly formed, suggesting a certain allure and charm. The use of the word "kissable" indicates an inviting quality, while "musical" implies a sense of harmony or pleasantness, possibly reflecting the character or emotions associated with it. This description emphasizes the significance of small details in conveying attraction and personality.

In Jeffrey Eugenides' novel "Middlesex," such vivid imagery plays a crucial role in character development and thematic exploration. The author uses this description to enhance the reader's understanding of intimacy and emotional connection, as well as the complexities of human relationships, through physical attributes.