Miriam Jarquín initiated her career as a singer in 1977 with the National Symphony Orchestra Choir of Costa Rica. She started singing jazz, pop, and rock in 1981, becoming one of the most important singers in San José, up ‘til today. In 1983, she started vocal lessons, participating in many lyrical concerts as a soloist and also in choirs.
Miriam graduated from the Musicians Institute in Hollywood, California, in 1990 and in 1991, she established the Modern Music Academy in Costa Rica (Academia de Música Moderna).
She is the winner of numerous musical festivals in her country, and participant in a variety of relevant international musical festivals throughout Latin America, representing Costa Rica: Festival de Paisajes Urbanos in Cuba on 1999, the Curaçao Jazz Festival on 2001 and the Latin Autor International Festival in Punta del Este, Uruguay, on 2003.