[3] On the subsequent tour Fabienne Gondamin was replaced by Henriette Bordvik, with whom the band recorded the album An Elixir for Existence and the EP Sirenian Shores.

On 16 July 2011, and as one of their most important performances of that year, was held at the famous heavy metal festival Masters of Rock, which takes place annually in the city of Vizovice, Czech Republic.

By the end of July and the beginning of August 2011, Sirenia made their second Latin American tour, which took them back to countries such as Mexico, Brazil, Argentina and for the first time to Peru and Chile in October.

[8] On 12 March 2015 the band announced on their Facebook page that Nightwatcher Films has signed Sirenia for the use of their song "Ducere Me In Lucem" of Perils of the Deep Blue for its soundtrack.

The song will come out in the opening title sequence of a film called Abandoned Dead penned for release January 2016.

[8][10] On 5 July 2016 Sirenia announced that after 8 years they were parting ways in good terms with longtime vocalist Ailyn[11] but that the work with the upcoming album will proceed as normal.

[11] On 29 August 2016 Sirenia revealed eighth full-length album Dim Days of Dolor before their official announcement of their new singer.

[12] She has contributed to lead vocals before on the Sirenian Shores EP cover of "First We Take Manhattan" by Leonard Cohen.

[14] In October 2017 before a European tour, French guitarist Nils Courbaron unexpectedly was invited to participate in the live performances replacing Jan Erik Soltvedt.

Consequently, Sirenia temporarily again included Austrian drummer Roland Navratil, a live member who had performed with the band before.

[15] Sirenia toured North America for the second time with Canadian metal band Threat Signal in April 2018, with support from Valinor Excelsior, Graveshadow, Niviane and Dire Peril.

[16] On 14 August 2018, Sirenia had revealed the title of their ninth studio album Arcane Astral Aeons, along with a European tour in the fall.

[20] In the fall of 2019, Sirenia went an extensive European tour with bands such as Leaves' Eyes, Forever Still and Lost in Grey.

[27] The tenth album was a remarkable stylistic shift for Sirenia, adding synth-pop to their usual symphonic metal musical style, opting for a more commercial bet.

On 22 March 2023, the band simultaneously announced the first single which is a cover of English singer Tanita Tikaram's "Twist in My Sobriety".