Luis Días

thumb|250px|Luis Terror with glasses Luis Díaz Portorreal, best known as Luis Días (June 21, 1952 – December 8, 2009), was a Dominican Republic musician, composer and performer of popular music. He was immersed in the popular music and customs of Dominican folklore. In the artistic realms he is known as "El Terror" ("The Terror"), due to his particular performance style and his overtones. He was the author of lyrics and music that fused many diverse musical styles.

In some circles, Luis was considered to be the Father of Dominican Rock, due to his contributions to alternative music and his experimentation with Dominican rhythms blended with rock guitar patterns. In his fusions, Luis accomplished fusions of rock, reggae, jazz and blues with more than 40 ethnic rhythms from the Dominican Republic and Haiti, such as merengue, bachata, and mangulina, among many others.