Willie Rosario a.k.a. "Mr. Afinque" (born May 6, 1930 in Coamo, Puerto Rico) is a musician, composer and bandleader of salsa music. Willie Rosario Rosario (born Fernando Luis Rosario Marin) was raised in a poor but, hard working family. His parents realized that as a child Willie was musically inclined and had him take guitar lessons at the age of 6. He received his primary and secondary education in his hometown. His mother also had him take saxophone classes, however what he really was interested in was the conga.