[1] He began his career as the singer for Graciano Gómez and Isaac Oviedo's son group, before joining Antonio María Romeu's orchestra.

He also toured and recorded in Venezuela and Puerto Rico before retiring in the early 1990s, when complications from diabetes prevented him from performing and eventually resulted in his death in 1995.

The family lived in a batey, where the young Díez attended elementary school and intuitively began to sing the repertoire of songs that Trio Matamoros had created.

Even though he formed a successful guitar trio along with Graciano Gómez and Isaac Oviedo a year later, Díez received an invitation from pianist and composer Antonio María Romeu to join his dance band in 1935, where he continued thereafter as its main soloist.

[1] During his career, Díez toured the Dominican Republic, Mexico, Puerto Rico, Venezuela and the United States in concerts and recorded eleven albums of his extensive repertoire of danzón music,[5] well on his way to becoming a household name outside of Cuba.