In Chapter 6 of The Silmarillion, Míriel chooses death over the labor of living, so Finwë remarries to the displeasure of his eldest son Fëanor (and half the Valar). Amid the strife in Finwë's house, Melkor is granted parole and begins to gain influence in Valinor. But Fëanor is a spirit so fiery, not even Melkor can sway him. Cue the foreboding music.