She also provided vocals for the jingles of two items in the Zombies game mode called Juggernog Perk-a-Cola and Elemental Pop Perk-a-Cola. All songs were written and produced by Kevin Sherwood, sound designer and composer at Treyarch.
The tracks featuring her vocals are (in chronological order): Lullaby of a Dead Man, The One and Beauty of Annihilation from Call of Duty: World at War and Call of Duty: Black Ops 115, Abracadavre, Pareidolia and Coming Home from Call of Duty: Black Ops Archangel from Call of Duty: Black Ops II Dead Again and The Gift from Call of Duty: Black Ops III. Some remastered versions of songs from previous games and a new track from Call of Duty: Black Ops II were released in 2013 on the Call of Duty: Black Ops II Zombies - Origins Soundtrack along with the Origins map pack for Call of Duty: Black Ops II. In 2011, her music was released on the Call of Duty: Black Ops - Zombies Soundtrack as part of the Rezurrection DLC pack, the fourth downloadable content pack for Call of Duty: Black Ops.
Also, in work for the video game developer Treyarch, she provided vocals for the soundtrack to the Nazi Zombies, or simply Zombies, game mode in the video games Call of Duty: World at War (2008), Call of Duty: Black Ops (2010), Call of Duty: Black Ops II (2012), Call of Duty: Black Ops III (2015), Call of Duty: Black Ops 4 (2018) and Call of Duty: Black Ops Cold War (2020). In 2006, Siegman worked with Guitar Hero developers Harmonix as the lead producer of Guitar Hero II. As of January 2012, she sings in the Boston-based rock band BrownBoot. She moved to Boston, and is the former lead guitarist and one of the founders of an all-girl punk band named Vagiant, now known as Tijuana Sweetheart. Elena Siegman is an American singer, guitarist, songwriter and video game producer from Los Angeles.