[1] Blessed with a powerful and versatile vocal range and timbre, Monge started out her career by winning a singing radio contest in 1966 (at the age of eleven).

It was "El Estornudo" ("The Sneeze"), and her cover of Italian hit "Vida"' ("Life"), that made her a national star after she released her first album.

1975 was a big year for Monge because she released a song named "Cierra Los Ojos" ("Close Your Eyes"), which was a hit in such South American countries as Colombia, Chile, Ecuador, Venezuela, Peru, and Argentina, and also in the Dominican Republic.

She sang at the Carnegie Hall and was backed up by her artistic godmother, legendary Argentinian singer and actress, Libertad Lamarque.

Tanto Amor (So much love) composed by Lou Briel, was the first hit song of that album named Fantasia produced by Pepe Luis Soto.

This album marked a radical change in sound and image for Monge, moving towards the Latin pop tendencies of the time while keeping her interpretative delivery.

Monge continued her winning stride in the middle 1980s, when she released what possibly is one of her greatest album ever: Luz de Luna (Moonlight).

In this album, she sang a Spanish version of "On My Own" ("Solo Yo") which is a song from the soundtrack of the famous Broadway musical Les Misérables.

This release included such songs as: "Acariciame" ("Caress Me") and "Este Amor Que Hay Que Callar" ("This Love That We Must Keep Quiet") composed for her by the Spanish singer and author Braulio.

NBC traveled all the way to Puerto Rico to interview Yolandita because they consider her the most relevant artist of the Latin music industry and she was even compared with Madonna.

After the huge success of Vivencias, she changed gears in terms of music style and released Portfolio in the summer of 1990, with the help of Venezuelan singer Ricardo Montaner which was one of the producers and songwriters.

With Portfolio, she performed nine sold-out concerts at Puerto Rico's Centro de Bellas Artes (making a new record on sales), and at the Madison Square Garden.

[citation needed] After more than ten years at Sony Latin, Yolandita signed a multimillion-dollar recording contract with WEA-Latina, the first for a female pop artist in Puerto Rico.

Also in 1996, she participated in the annual music video special, produced by Banco Popular de Puerto Rico, dedicated to Pedro Flores, which usually includes only the most important and international singers the island has to offer.

She also sang with Julieta Venegas, Luis Fonsi, Lucecita Benítez, Víctor Manuelle, Chucho Avellanet, Gilberto Santa Rosa, La India, Gisselle, Lissette, Tito Nieves, Dagmar, Andy Montañez, Danny Rivera, and many more.

These performances were once-in-a-lifetime duets that graced Puerto Rico's silver screen and kept the captive audience that followed the show wanting more.

In November 2007, Yolandita returned to Centro de Bellas Artes with five sold-out concerts in support of the Demasiado Fuerte album.

[3] Immediately, on November 22, 2008, Yolandita released the album Mala, produced once again by José Luis Pagán and following the same musical and lyrical style as her previous Demasiado Fuerte.

Soon after, Yolandita returned to Centro de Bellas Artes in April 2011, for a once-in-a-lifetime sold-out concert accompanied by the Philharmonic Orchestra of Puerto Rico, as part of the thirty year anniversary celebration of the venue.

During 2012, Yolandita was one of three judges in Idol Puerto Rico, along with her husband Carlos 'Topy' Mamery and Ricardo Montaner during the second season of the program.

Beginning in the Dominican Republic, this concert tour visited cities in the United States, Puerto Rico and Latin America.

The album contains other songs performed by Nydia Caro, Chucho Avellanet, Dagmar, Michelle Brava, Andy Montañez and Carola Ausbury.

On May 13, 14 & 27, 2017, Yolandita teamed for the first time with Lissette Alvarez for a three sold-out performances at Centro de Bellas Artes of Caguas for the concert "Emociones".

Yolandita returned to Centro de Bellas Artes for five sold-out performances of the new show "Por Tí" on December 6, 7 & 8, 2019 and February 14 & 15, 2020.

[5] The singer remains active throughout the year performing in concerts and festivals in Puerto Rico and other Latin American countries.

Among the telenovelas, she acted in: Vida (Life), (where she performed with Johanna Rosaly), La Mentira (The Lie), Poquita Cosa (Small Thing), Escándalo (Scandal)[6] (where she acted alongside Andrés García, Iris Chacón and Charytín), and Ave de Paso (Bird of Passage), where she played the main role, and sang the theme song: "Nunca Te Diré Adiós", composed for her by Lou Briel.

She also acted in the original version of the Colombian mega-hit soap opera, La Viuda de Blanco along with Osvaldo Ríos, Maria Helena Doehring, Jorge Enrique Abello and Danilo Santos.

In 1999, Monge headlined the TV movie Ocho años de Dolor (Eight Years of Pain), where she played a woman kidnapped by the famous Puerto Rican serial killer and fugitive of the law Toño Bicicleta.