Sylvia Regina Rexach González[1] (January 22, 1922 – October 20, 1961) was a Puerto Rican comedy scriptwriter, poet, singer and composer of boleros.

[2] Rexach enrolled in the University of Puerto Rico where she was going to take a pre-legal course; however, when the United States entered World War II in 1942, Rexach dropped-out of the university and joined the United States Army as a member of the WACS (Women Army Corps Service), where she served as an office clerk.

[4] The marriage eventually ended in a divorce and she returned to Puerto Rico, where she went to work for a radio station as a comical script writer, first for producer Tommy Muñiz, and later for comedian Ramón Rivero "Diplo".

They were named Las Damiselas (The Damsels), and besides Rexach included: Idalia Rosario, Marta Romero, Millita Quiñones, Elena Rita Ortiz, and Ketty Cabán.

Among her compositions that became hits in Puerto Rico and abroad were: "Alma Adentro" (Inner Soul, actually a homage to a brother who died in an accident), "Idilio", "Olas y Arenas" (Waves and Sands), "Mi Versión" (My Version), "Nave sin Rumbo" (Wandering Ship), "Di, Corazón" and "Matiz de Amor".

Her compositions have been recorded by many other artists, such as Marco Antonio Muñiz, Danny Rivera, Gilberto Monroig, Chucho Avellanet, Lucecita Benítez, Juan Luis Barry, Linda Ronstadt, Ednita Nazario, Lourdes Pérez, Lunna, and Maritzaida.