There are at least five bands named Mamut. Mamut is a band from Mercedes, Province of Buenos Aires, Argentina, which was formed at the initiative of Jano Pollero and Guillo Grassi. They debuted live in the city of Lobos in August 2003. Gustavo Villalba is lead-singer, Gonzalo García Salabert on drums, Guillo Grassi on guitar and Jano Pollero on bass. The first album was recorded in November 2004 in Rosario, Santa Fe. The broadcast cut was Asesinato en el circo.