Rosario was born and raised in Coamo, Puerto Rico into 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. In 1946, he formed a band called Coamex but, a year later when he was 17 years old, his family to moved to New York City. The family rented an apartment in a Manhattancommunity known as Spanish Harlem. Rosario came into contact and played the conga for various orchestras. After he graduated from high school, he continued his education and studied journalism and public relations. On one occasion Rosario visited the famed Palladium Ballroom in New York, where Tito Puente was playing the timbales. This was the beginning of his love affair with that instrument. He was 22 years old when he took classes with percussionist Henry Adler.
Rosario's first band
In 1959, Rosario organized his first band and played for three years in the Club Caborrojeño in New York. When not playing, he would work as a disc jockey for WADO, a Spanish speaking radio station in New York. In 1962, he signed with the Alegre Records label and traveled and performed with his band in Venezuela, Panama, Colombia, Mexico, Curaçao, U.S. Virgin Islands and all over the United States. In the 1980s he opened the Tropicana Club in Puerto Rico in association with fellow Puerto Rican musician Bobby Valentín.
Compositions
Among his best-known compositions and arrangements are "De Barrio Obrero a la Quince" was actually written by Trinidad Clemente, "El Timbal de Carlitos", "Mi Amigo el Payaso" with lyrics by Luis Antonio Ruiz, "El Revendón", "Lluvia", "Cuando No Hay Cariño". Plus, he also composed the following jazz tunes "Flip, flop", "Stop and go" and "My Favorite Thing". Rosario also produced the following songs with the participation of Gilberto Santa Rosa, Tony Vega, Papo Lucca and Bobby Valentín; "Latin Jazz Go-Go-Go", "El Bravo soy Yo", "Too Too Much" and "Willie Rosario y su Ritmo".
Awards and recognitions
Among the awards and recognitions bestowed upon Rosario are a nomination in 1987 for a Grammy Award for his song "Nueva Cosecha", various Gold and Platinum Records, the Agüeybaná de Oro Award, ACE, Diplo and Paoli Awards. In 2000, the Puerto Rican Senate paid tribute to Willie Rosario in recognition of his 40 years in the field of music. In 2002, Willie Rosario was inducted into The International Latin Music Hall of Fame. Wllie Rosario's last production was "La Banda Que Deleita". He continues to play many venues all around Puerto Rico, including the prestigious Puerto Rican World Salsa Congress and many times at "Dia Nacional de la Salsa" or the National Salsa Day in Puerto Rico. He has also played minor venues, such as Shots Bar & Grill in the Isla Verde Mall in late October 2006. Since his October 2006 performance, Willie Rosario and his band also performed for the Puerto Rican Medical Doctors' Association of El Paso Gala in December 2007. He continues to be a living salsa legend to salsa fans worldwide.