members ; current members omar acosta lead vocals , guitar ( since 1996 ) carlos kretchmer vocals , bass ( since 1991 ) pedro lópez guitars , backing vocals ( since 1991 ) juan herrera drums ( 1991 -- 2005 , since 2009 ) ; former members alex patiño lead vocals ( 1991 1999 ) cedric guitars ( 1994 1999 ) boyle drums ( 1991 ) daniel tobar drums ( 2005 2009 ) discography ; studio albums incierto final ( 1993 , sello alerce ) fábricas mágicas ... lápidas tétricas ( 1995 , toxic ) hardcore para señoritas ( 1997 , ta ke sale !