A.B. Quintanilla is an American music producer, songwriter, and musician, best known for his work in the Latin music genre. He was born on December 13, 1963, in Corpus Christi, Texas. A.B. is the brother of the late Selena Quintanilla, a famous Tejano singer, and he played a significant role in her career by producing many of her hit songs. In addition to his work with Selena, A.B. Quintanilla has produced music for various artists and has been involved in several musical projects. He is also known for his contributions to the Kumbia Kings, a popular band that blends cumbia and other Latin music styles.