Billy Bond y La Pesada del Rock and Roll (also known as La Pesada del Rock and Roll or La Pesada) was an Argentine supergroup pioneer of hard rock, psychedelic rock and heavy metal in Latin America. It was formed in 1970 by the producer Jorge Álvarez (co-founder of the Mandioca record label) and the singer/producer Billy Bond, who would be the leader of the band. Renowned Argentine musicians passed through La Pesada who made their first steps in rock