Sethu is delirious with grief and heartbreak. Its subjects are often romantic; especially prevalent are tales of heartbreak and sadness. The album's slower songs generally explore themes of loneliness, heartbreak, and mistrust. "Coexist" deals with themes of heartbreak, loneliness, and intimacy. The recordings from "Sea Change" sessions include themes of heartbreak and desolation, solitude and loneliness. They share a connection based on mutual betrayal and heartbreak. The track also explores feelings of regret and heartbreak. Zebian wrote about feelings that emerged from a painful heartbreak. There they experience love, romance, and heartbreak. Lyrically, it deals with themes such as love, romance, heartbreak and forgiveness. "Nevermore" is a short ballad written by Mercury about the feelings after a heartbreak. The album's lyrics are about heartbreak and solitude. According to the "Heartbreak and Triumph" DVD, Michaels was unhappy there. Much of Hill's lyrics dealt with motherhood, the Fugees, reminiscence, love, heartbreak, and God. Reeling from shock and heartbreak, Prerna moves to London.