Born in Yerevan, in a family of musicians, Nariné Dellalian made her first steps in music with her father, composer Harutiun Dellalian. She studied at a School of Music for gifted children after Tchaykovsky in the class of Professor Matinian. Later Dellalian joined the Komitas State Conservatory and studied with Professor Harutunian. After finishing her studies, Dellalian started work with the Symphonic Orchestra of Radio and Television of Armenia.
Since 1990, together with her husband, cellist Levon Mouradian, Nariné Dellalian has been invited to work in the Gulbenkian Orchestra, where she performs several concerts. In 1991 Sao Carlos National Theater invited her to participate in the opera "Lost Love" in Brussels as the coordinator of the 2nd violins. Since 1993 Nariné has been occupying the position of assistant coordinator of the 2nd violins in the Portuguese Symphony Orchestra. During all these years she acted as a soloist and also integrated in chamber music groups in Portugal, Germany, Italy, Spain, Austria, USA, Japan.
In 1998 she was invited to participate in the concert series celebrating 60 years of the composer Harutiun Dellalian’s birth in the city of Los Angeles. In 2000 Dellalian published the CD entitled "Musical Relics of Armenia" with the publisher Sondex. In 2001 the CD won the "Best Traditional Music Album" (AMFA Presents) in Los Angeles.
In 2005 State Chamber Orchestra of Armenia invited her to participate in the "Retrospective Festival" dedicated to music of Harutiun Dellalian. In the same year she edited the book that gathered a selection of articles, letters, reviews, music criticism, memoirs about life and work of Harutiun Dellalian. The book includes a CD with the works of chamber and symphonic music of the composer.
In 2007 Dellalian was invited to join the organization of the First International Festival of Symphonic Music in collaboration with the Symphonic Orchestra of Armenia including various soloists and guest conductors. Among them was the Maestro Emilio Pomárico (Italy) that directed the closing concert of the festival which was dedicated to the 70 years of birth of Harutiun Dellalian. In this concert the world premiere of Symphony No. 3 by the composer was held. Every year Nariné Dellalian presents new chamber music programs in Sao Carlos Theater, Gulbenkian Foundation among others.