Armen Martirosyan received music lessons in his early childhood by his grandmother, who taught him the rudiments of the notes. At the same time, his parents introduced him to different genres of musical art (ballet, opera and concerts of symphonic music).
In 1970, aged seven, Martirosyan started attending a music school - being already familiar with the notes, having perfect pitch and a sense of rhythm. Teachers noticed his composing abilities and rare intuition for performing musical compositions.
In 1978, aged fourteen, Martirosyan met Edvard Mirzoyan, the Chairman of the Composers’ Union of Armenia. It was a historical event for the teenager. In 1980, he entered the Yerevan Komitas State Conservatory and the composition class of Edvard Mirzoyan.
A strong innovative character distinguished Martirosyan, he was the first composer in Armenia to apply computer technologies in music. From 1991 to 1995 were Martirosyan's “traveling years” - during these four years he worked in Switzerland as a pianist. From 1995 to 1997 he worked in the Armenian Song Theatre as a producer and arranger.
In 1997, he became an artistic director and a conductor of the Armenian Jazz Band. Martirosyan composed Armenia's entry into the 2010 Eurovision Song Contest in Oslo "Apricot Stone".