Trio Calaveras

Trío Calaveras is a Mexican guitar and vocal trio, notable for its performances and recordings with the pop singer Jorge Negrete.
Calaveras, in Spanish, means "skulls".
The original members of the trio in the 1930s were Guillermo Bermejo (died 2002), his brother Miguel Bermejo (died 1996) and Raúl Prado (died 1989). Guillermo Bermejo left the Trio and moved to Argentina in 1945 his brother replaced him with Pepe Saldivar (died 1975).
There are conflicting rumors that Prado had... meer