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.