"I Do (Zula's Song)" by Elvis Costello is a song that tells a heartfelt story of love and commitment. The lyrics describe a relationship at a significant turning point, symbolized by a tree at the crossroads and a nail in the narrator's shoe. The song begins with the plea to the partner to repeat their promises softly, indicating a desire for reassurance and a reminder of their commitment to each other. The notion of seeing something through suggests that this relationship has faced challenges or obstacles before, and the narrator seeks the partner's affirmation that they will overcome them together. The lyrics then invite the partner to go to the other side, possibly referring to a different perspective or a new chapter in their lives. By taking in the view, their eyes will see better, suggesting a sense of hope and optimism. Watching the river flow may symbolize the passage of time, with the assurance that they will face it together, even if uncertainty arises. The lines "You may say, 'I don't know', but 'I do'" highlight the contrast between doubt and conviction. The partner may express doubt or hesitation, but the narrator believes in their commitment, emphasizing that they do know and believe in their love. The lyrics then describe a future where every night will be starless, possibly indicating the absence of external distractions, allowing them to focus solely on each other. Each day will be fine, highlighting the contentment and satisfaction they find in each other's presence. The mention of peaceful hours and a slow river painted by reeds evokes a serene and tranquil setting, suggesting a harmonious and fulfilling life together. The line "The earth will be broken and will lie there below" implies a deep connection and merging of their lives, where they are bound together like the earth itself. The narrator expresses complete devotion by declaring, "I am yours, you are mine," emphasizing the significance of their union. The lyrics conclude with a reflection on the desire for their love to endure. Longing for longer is considered a crime, suggesting that they should cherish and appreciate the present moment rather than constantly yearning for more. The repetition of "You may say, 'I don't lie,' but 'I do'" reinforces the sincerity and honesty of their love. Overall, "I Do (Zula's Song)" delves into themes of commitment, trust, and the enduring nature of love. It portrays a deep and profound connection between two individuals who are willing to overcome obstacles together, embracing the beauty and tranquility that their love brings.