Las Pelotas is an Argentinian rock band that originated from the separation of an older and pioneer band called Sumo. It is an alternative rock band that currently holds one of the top spots in popularity throughout Argentina. Formed in 1988 in Buenos Aires. First line-up Germán Daffunchio (guitar) Alejandro Sokol (main vocals) Alberto "Superman" Troglio (drums) Willy Robles (bass) Second line-up Germán Daffunchio (guitar and backing vocals) Alejandro "Bocha" Sokol (main vocals) Alberto "Superman" Troglio (drums) Guido Nielsenson (bass) Tomas Sussmann (guitar) Hernando "Tito" Flores (trombone and percussion) Third line-up Alejandro "bocha" Sokol (main vocals) Gabriela Martínez (bass and backing vocals) Germán Daffunchio (guitar and backing vocals) Gustavo Jove (drums) Tomas Sussmann (guitarra) Marcelo "gillespi" Rodríguez (keyboard and trumpet) Fourth line-up Germán Daffunchio (guitar and vocals) Gabriela Martínez (bass and vocals) Gustavo Jove (drums) Tomas Sussmann (guitar) Sebastián Schachtel (keyboard) Gabriel Dahbar -Cayacanaya-(backing vocals) Fifth line-up Germán Daffunchio (guitar and vocals) Gabriela Martínez (bass and vocals) Gustavo Jove (drums) Tomas Sussmann (guitar) Gustavo Kupinski (guitar) Sebastián Schachtel (keyboards) Gabriel Dahbar -Cayacanaya-(backing vocals)