The Twilight Zone Episode 2.04 Ovation

Fiji, a disgruntled pop star, commits suicide after giving Jasmine, a street performer, a medallion. Upset, Jasmine begins to write and perform music at the scene of Fiji's suicide and is later told to appear in a singing competition series called Ovation. She manages to win the show but her sister tells her to throw away the medallion or a tragedy will befall her if she doesn't. Because of this, Jasmine's new popularity declines, and she stumbles upon a new artist named Mynx. Upset at her lost fame, Jasmine kills Mynx who turns out to be her sister while a passing crowd erupts in applause. The medallion is picked up by Jordan Peele who just claps and walks off.