Terror in Mexico: Two Mexican musicians have been murdered in the past week. The tortured body of Sergio Gomez, the front man for the very popular K-Paz de la Sierra was found Sunday. He's seen singing the excellent "Mi Credo" here. Zayda Pena, featured with her group Los Culpables in the embedded video, was shot and killed in a hospital bed December 3, where she was recovering from a previous assassination attempt. She was 28.