Arianne

Arianne is the singer of two songs from Evangelion. One is Komm, süsser Tod, Come Sweet Death, which was used in The End of Evangelion once Third Impact begins. The other song, not used in the series, is Everything You've Ever Dreamed.
This song, available only on the S2 Works and Refrain of Evangelion CDs, appears to be about Shinji and Asuka's relationship as the song lyrics imply. And although it wasn't used in EoE, Everything You've Ever Dreamed gives insight on why Shinji strangled Asuka during the final scene.
Both Komm süsser Tod and Everything You've Ever Dreamed are composed by Shiro Sagisu and adapted into English by Mike Wyzgowski from Hideaki Anno's original Japanese lyrics.