Tren Loco is an Argentinian heavy metal band formed in the suburban town of Grand Bourg, in Buenos Aires Province. Their lyrics relate social issues, like "Clase trabajadora" (Working class), "Fuera de la Ley" (Outlaw) and "Lucila"; others are about political issues, such as "Pampa del Infierno" (Hell's Land) and "Nos vemos en Cutral-Co" (See you at Cutral-Co). They also write about personal matters: "Endemoniado" (Possessed), "No me importa" (I do not care) and "A ultranza" (To the end). The group's name is inspired by the classic Ozzy Osbourne song: Crazy Train.