The song "Setelah Kau Pergi" by Ungu expresses the pain and emptiness that the narrator feels after their loved one has left. The lyrics convey a sense of heartbreak and the inability to love someone else as deeply as they loved the person who has departed. The narrator admits that they no longer have a heart to love or care for someone new because their heart has been taken away with the person who left. The song suggests that life feels lifeless and devoid of meaning after the departure of the loved one. The narrator conveys the absence of the same kind of love they once had and confesses that they are unable to love someone else in the same way. Overall, "Setelah Kau Pergi" depicts the pain and longing felt after the loss of a loved one and the difficulty of moving on and finding love again. The song captures the emotional struggle and the void left behind by someone's departure.