She worked by having avant-garde composers such as Iannis Xenakis and Vinko Globokar who gave her the lead role around his opera Un Jour Comme Une Autre which deals with the demise by torture of a Turkish woman. A act was sponsored by Amnesty International. She as well contributed her voice of Francis Ford Coppola's ''Dracula and also apeared on the motion picture soundtrack.

Her operate number 1 garnered far flung reputation by having a controversial 1991 live recording of the album Plague Mass in the Cathedral of Saint John the Divine in New York. By having it, Galás attacked a Catholic Church for its indifference to AIDS using biblical texts. In the words of Terrorizor Magazine, "The church was made to burn with sound, not fire."[http://www.diamandagalas.com/press/terrorizor0798.htm]

Susan McClary (1991) writes that Galás, "heralds a new moment in the history of musical representation," fallowing describing her so: "Galás emerged within the post-modern performance art scene in the seventies...protesting...the treatment of victims of the Greek junta, attitudes towards victims of AIDS...Her pieces are constructed from the ululation of traditional Mediterranean keening...whispers, shrieks, and moans."

Around 1994, Galás collaborated using Led Zeppelin bass guitarist John Paul Jones. A sequent record, A Sporting Life'', when containing tremendously of Galás's trademark vocal gymanstic exercise, is probably a nearest she has ever are to rock music.

Galás too performs as a blues artist interpreting a wide range of songs into her unique piano & vocal styles. This aspect of her functiin is focused on in The Singer, Imprecation & Prayer, & La Serpenta Canta. Numbers of of her selections two in & outside of blues repitoir own every now and again been categorized when 'murderous love-song'. She too focuses on the dying penalty. Of these program of songs, "Frenzy", has been dedicated to Aileen Wuornos and features the operate of Phil Ochs's Iron Lady & Hank Williams Sr.'s ''I'm So Lonesome I Could Cry.

The recent operate (2003), "Defixiones, Will and Testament", deals by using a Turkish genocide of Anatolian Greek, Armenian and Assyrian people. Galàs performs a operate inside 10 different languages.

Her latest song period is an interpretation of songs by Édith Piaf and Marlene Dietrich.

Discography: Litanies of Satan (1982) - luminary for "Wild Women with Steak Knives" Faust. Eros. Tod (1982 ?) (survive) Diamanda Gala affair (1984) Saint of the Pit (1986) Divine Penalisation (1986) Your family Must Become Certain of the Devil (1988) Mask of the Red Dying (1989) Plague Mass (1984 Prevent of the Epidemic) (1991) (survive) The Singer (1992) Vena Cava (1993) The Sporting Life (1994), with John Paul Jones Schrei X (1996) (survive) Imprecation & Prayer (1998) (live) La serpenta canta (2003) Defixiones, Might & Testament (2003) Source
McClary, Susan (1991). Feminine Endings: Music, Gender, & Gender'', p.110-11. Minnesota: University of Minnesota Click. ISBN 0816618984.