Elena Siegman is a singer for Treyarch, recognized for singing the musical easter eggs composed by Kevin Sherwood in Nazi Zombies. She also sings the Juggernog Perk-a-Cola Machine jingle. The musical easter eggs are:
- Lullaby of a Dead Man
- The One
- Beauty of Annihilation
- Coming Home
- Archangel (with Malukah and Clark S. Nova)
- Dead Again
- The Gift
- Some partitions of her work can be heard in the 'Turned' contextual melody.
- She started working for Treyarch since the game "007: Quantum of Solace".
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