Abraham Isaac "A.B." Quintanilla III is an American record producer, songwriter, and musician. Dubbed the "King of Cumbia" for his influence on the cumbia music genre, he is the older brother of singer Selena. Quintanilla produced and co-wrote many of Selena's albums and singles. He is also the founder and creator of the bands Kumbia Kings and Kumbia All Starz, for which he wrote and produced numerous hit songs and performed as a member of both groups. In addition, he has written, produced, and contributed music for various other artists.