At the age of five, Humberto Cristian and María Fernanda Aldana started playing music at home with their father's classical guitar (he was a bolero and tango singer in old bars) and a GEM organ.

Under the influence of their mother, who was a poet, they started writing their first songs, which were simple in the early stages but revolutionary nonetheless, in the style of Velvet Underground & Nico.

Marifer had read a letter that French poet Arthur Rimbaud wrote when he was 16 and which stated “I Am Another” (“Je Suis Un Autre”); that phrase was imbedded in her memory during the formative years of the band.

Back in 1992, they already had a demo with two tracks (“Los pájaros” and “Sexo en el elevador”) and used two decks to make home recordings of songs such as "Analía", "Hola papá", "Vacaciones" and "Caminando".

It was then when Daniela Cugliándolo and Sudor frío, her theatre group, joined the band on stage with a performance that depicted two actresses emulating one person.

That year, they join the Rock & Pop Alternativo Festival at Ferro Stadium, along with Soda Stereo, Nick Cave and the Bad Seeds, Silverchair, Tracy Bonham and Robi Draco Rosa among others, thus becoming one of the best bands in the country.

That year, Ezequiel Araujo, Avant Press former bass player, joins the band on keyboards, after Daniela Cugliándolo (who by then had become a theatre director) moved to Barcelona, where nowadays she films and directs Super 8 art videos and is part of Spanish group Bradien.

After years of an independent career, their well-known Gira Interminable tour took them to Obras Sanitarias Stadium for the first time, where they presented their latest production.

They embark on a new Gira Interminable around the country, finishing up once again at Obras Sanitarias Stadium, with guests such as Leo García, Adrián Dárgelos and Rosario Bléfari, among others.

They join the Watcha Tour along with Los Enanitos Verdes, Molotov, La Ley, Juanes, Bersuit Vergarabat and Dover, among others.

During this tour, and with the help of Gustavo Santaolalla, La Ley invites EOY to play at the Greek Theatre in Los Angeles, with an audience of over 20.000 people.

COLMENA is the hive where they concentrated the resulting product of the pollen they collected in each place they visited, shaping and packing it into a CD with fourteen songs and an interactive video.

The new material, with an unusual and original cover art, was produced once again by Diego Vainer and featured guests such as Gustavo Santaolalla, Horacio “Gamexane” Villafañe (Todos Tus Muertos), Mariano Martínez (Attaque 77) and Ricardo Espinoza (Flema).

That year, keyboard player Ezequiel Araujo decides to follow a new path as a producer (Intoxicados, Fidel and many others) and leaves the band.

By synchronicity of the magical musical destiny, he is immediately replaced by Gabriel Guerrisi, distant cousin of the Aldana siblings and founder of Los Brujos (mega band from the 1990s), who had just left Juana La Loca.

The hardcore moments and strong messages about society and the system that the band always conveyed are back on ESPEJISMOS (“Pecadores”, “Nuevo orden”, “Mascota del sistema” and its first single “Licuadora mutiladora”).

In 2006, Besótico releases Marifer's new solo album: DIOS TE SALVE MARÍA, a piano CD that comes with poetry and which was recorded at La Alianza Francesa and produced by Diego Vainer and Ezequiel Araujo.

The set list includes the band's most acclaimed songs (“10.000.000”, “No me importa morir”, “La música”, “EOY”, “Alegría”) and some distinctive guests: metal singer Claudio O’Connor on “69” and Diego Arnedo on “Fuck You”.

The album includes an unreleased track called “Lobizón” and the DVD features documentaries about the 2000 Gira Interminable tour and backstage moments at Obras Sanitarias.

In October, they release ESTALLANDO TU LADO SALVAJE, a live CD and DVD from the 2005 show at Obras Sanitarias Stadium, where they presented ESPEJISMOS.

Furthermore, Cristian becomes the chairman of the Union of Independent Musicians (Unión de Músicos Independientes), a civil association that gathers over 6000 registered bands.

The band celebrated the special Argentinian and Mexican editions of their new studio album, AILABIU EOY, which was artistically produced by Paco Huidobro and had Jason Carmer's technical production.

On an international level, they joined the Unite Tour, which took them all over Mexico during three months and allowed them to play at the prestigious Cervantino Festival in Guanajuato.

Marifer Aldana releases a new solo album called “Noosfera”, which features guests such as Diego Vainer, Gerardo Farez and Ezequiel Araujo, among other friends.

They concluded the celebrations at the Auditorio Sur in Temperley with a show called "25 years, 50 songs", with a set list put together by the fans through the social networks.

Contagiándose La Energía Del Otro en vivo en Obras (CD + DVD) (2005) El Otro Yo en vivo Quilmes Rock 03 (DVD) (2005) Fuera del Tiempo (CD + DVD) (2007) (Only in Mexico) Estallando Tu Lado Salvaje (DVD + CD) (2008) Los Hijos de Alien Traka-Traka Traka Traka Corta el pasto 69 Mundo Alegría La Ra La Hombre de mierda 69 (Fantasías Animadas Mix) Esencia Cancha Leo Hablándote Abrecaminos 10.000.000 La música No me importa morir Violet Contagiándose La Energía Del Otro Alegría (Live) Colmena Virus Nuevo Calles Desatándonos Perro Inmaduro Punk Me harté Siberiano Viajero Espejismos Nuevo orden Mascota del sistema Ola salvaje Licuadora mutiladora Compañeros de ruta Autodestrucción Tu ángel Profundidad Debe cambiar Pecadores Viaje de luz Orión Fuera del Tiempo Alma gemela Locomotora Hoy te espero Sensación especial Crazy Amor fuego Estallando Tu Lado Salvaje Inmaduro (Live) Ailabiu EOY Siempre fui yo Ailabiu Velero El verano Astronauta 5ta Dimensión Los niños Saltar Te quiero Dinero 666 Platón