"Go Leave" is a duet performed by Anne Sofie von Otter and Elvis Costello. The song expresses the emotions and thoughts of a person who has been left by their partner for someone else who is supposedly better and stronger. The protagonist accepts the reality of the situation and encourages their ex-partner to leave and not come back. The lyrics convey a mix of sadness, acceptance, and longing. The protagonist admits that their heart is aching and breaking, but still acknowledges that their partner's choice might be for the best. They remember the good times they shared, but also understand that those memories cannot change the current situation. The song captures the complex emotions experienced when a relationship ends and one person realizes they are no longer the chosen one. It reflects the narrator's desire to move on, even though their heart still longs for the past. The lyrics also touch on the universal theme of heartbreak and the bittersweet realization that sometimes love does not last forever. Despite the pain, the protagonist acknowledges that their partner's decision might be the right one for both of them. The haunting melody and the emotional delivery of the duet by von Otter and Costello further convey the melancholic atmosphere of the song. "Go Leave" highlights the raw vulnerability and acceptance of the end of a relationship, while also expressing the lingering emotions that remain.