Question: Which band from Stavanger was Liv Kristine a member of? 

Context paragraphs:
Elegy (EP): Elegy is a Maxi single/EP by symphonic metal band Leaves' Eyes, released on 2 May 2005.  Almost all vocals are by the Norwegian singer Liv Kristine, with some backing "growls" by her husband Alexander Krull.  The song "Elegy" is taken from the then upcoming album "Vinland Saga", and a further track from that album, "Solemn Sea" is also included in demo form.  The rest of the tracks are exclusive to this release, but unlike the following EP "Legend Land", they do not share the Vinland theme.

Deus Ex Machina (Liv Kristine album): Deus Ex Machina is the first full-length album from former Leaves' Eyes frontwoman Liv Kristine.  Unlike her follow-up, "Enter My Religion", she only co-wrote two songs: the title track and "In the Heart of Juliet".  The song "3 am" is a duet between Liv Kristine and Nick Holmes of Paradise Lost.

Eterno (Romanthica album): Eterno is the first album by Romanthica.  The album was self-released twice in 2012 and 2013, then re-released in 2014 under the sub-label Fair Warning / Gran Sol.  The track "Despierta" features ex-Leaves' Eyes member Liv Kristine.  A digital download single of "Mercurio" was released in 2013.

Vinland Saga (album): Vinland Saga is the second full-length album by the symphonic metal band Leaves' Eyes, released in 2005.  It is a concept album that tells the story of the voyage of the Norse explorer Leif Erikson and his discovery of Vinland (a.k.a. Newfoundland).  The main vocals are by the Norwegian singer Liv Kristine, but some harsh vocals performed by her husband and producer Alexander Krull can be heard on the songs "Solemn Sea", "The Thorn", and "New Found Land".

King of Kings (Leaves' Eyes album): King of Kings is the sixth studio album by the German symphonic metal band Leaves' Eyes.  It contains guest appearances of a.o. Simone Simons from the Dutch symphonic metal band Epica and Lindy-Fay Hella from the Norwegian dark folk act Wardruna.  It is their last album with Liv Kristine on vocals.

Theatre of Tragedy: Theatre of Tragedy was a Norwegian band from Stavanger, active between 1993 and 2010.  They are best known for their earlier albums, which influenced the gothic metal genre.

Leaves' Eyes: Leaves' Eyes is a German-Norwegian symphonic metal band from Stavanger, Norway and Ludwigsburg, Germany.  They were formed in 2003 by Liv Kristine, the former lead singer of Theatre of Tragedy and the entire line-up of Atrocity.  To date, the band has released six studio albums, a single, six EPs, one live album and a DVD.

Lovelorn: Lovelorn is the debut studio album by the Norwegian/German symphonic metal band Leaves' Eyes, released in 2004.  Almost all vocals on the album are by Liv Kristine, but there are also some death growls by Alexander Krull.

Liv Kristine: Liv Kristine Espenæs (born 14 February 1976), better known as Liv Kristine, is a Norwegian singer-songwriter who has performed and composed songs mostly for various subgenres of heavy metal music.  She started her career in the music industry as a vocalist for the gothic metal band Theatre of Tragedy, and is the former lead vocalist for the symphonic metal band Leaves' Eyes.  She is known for her work in close association with her then-husband and leader of the German band Atrocity, Alexander Krull.

Nell Sigland: Ragnhild Westgaard Sigland (born November 13, 1976), mostly known by her stage name Nell Sigland, is a Norwegian singer from Hamar, best known as the lead vocalist of Norwegian gothic metal band Theatre of Tragedy as a replacement for Liv Kristine, from June 3, 2004 to October 2, 2010.  She was also the lead singer for Norwegian gothic rock band The Crest, founded by her husband Kristian Sigland and herself.

Supporting paragraphs: Liv Kristine Theatre of Tragedy
Answer: Theatre of Tragedy