María Joaquina Grever née de la Portilla Torres was the first female Mexican composer to achieve international acclaim. She is best known for the song "What A Difference A Day Makes" (originally "Cuando vuelva a tu lado"), which was popularized by Dinah Washington and has been covered by numerous artists.
Grever wrote more than 800 songs — the majority of them boleros — and her popularity reached audiences in Latin America, Europe, and the United States. She was said to have possessed perfect pitch and wrote most of her songs in one key. Her first piece of music, a Christmas carol, was composed when she was four years old. She wrote her first song when she was 18 years old, "A Una Ola" (To a Wave), and it sold three million copies.
Grever's first international hit was "Júrame" (Promise, Love), a habanera-bolero interpreted in a masterly manner by tenor José Mojica. Other hits continued to follow, such as "Volveré" (I Will Return); "Te quiero dijiste" (Magic Is the Moonlight), written for the 1944 Esther Williams film Bathing Beauty, as well as "Cuando vuelva a tu lado" (When I Return To Your Side as recorded by Nestor Mesta Chayres) and "Por si no te vuelvo a ver" (What if I see you again). Other songs of hers include "Tipitipitin" (recorded as "Ti-Pi-Tin by the Andrews Sisters), "Para Que Recordar", "Ya No Me Quieres", "Tu, Tu y Tu" (as recorded by Mexican tenor Juan Arvizu in 1928), "Que Dirias de Mi", "Eso Es Mentíra", "Mi Secreto", "Dame Tu Amor", "Una Rosa, Un Beso", "Despedida", "Asi" , Chamaca Mía, Todo Mi Ser, and "Alma Mia".