Jennie-Ann Smith at Rock Hard Festival 2015
In the winter of 2012 Candlemass founder and bass player Leif Edling started to work on a new project and wrote a few demos. Looking for musical partners, he first reached out to his friend, Opeth front man Mikael Akerfeldt, but due to a lack of time, he had to decline. Therefore, Stockholm-based guitarist Marcus Jidell (Soen, ex-Evergrey, ex-Royal Hunt) offered to help. Soon, Tiamat drummer Lars Sköld and keyboarder Carl Westholm joined the new band and the line-up was completed by Jidell's wife Jennie-Ann Smith, whose deep and bluesy voice added a new touch to Edling's typical heavy doom riffs.
The band's first live show outside of Sweden took place at the Dutch Roadburn Festival in April 2014, and in the fall of the same year, the Swedes released the EP All I Want, which also featured percussions US musician Michael Blair.
After a European tour and several festival appearances, the band entered the studio once more to record their second album: The Girl with the Raven Mask was released worldwide in October 2015 and was voted "album of the month" in several leading European magazines, such as Rock Hard and Metal Hammer. It was nominated for the independent music prize Manifest in Sweden and in September 2016, Avatarium received the „Up And Coming“-award from Germany's Metal Hammer.
For health issues, Leif Edling quit playing live shows with the band on their headline tour through Europe and Anders Iwers  joined the band as a live member. Although Edling stepped out of the spotlight, he is still active as songwriter for the band and at the end of 2016, Avatarium entered the studio again to record their third album Hurricanes And Halos, together with their new bassist Mats Rydström and organist Rickard Nilsson. This time, singer Jennie-Ann Smith and guitarist Marcus Jidell also contributed to the songwriting. The full-length album was released on May 26, 2017 through Nuclear Blast.
- Avatarium (2013)
- The Girl with the Raven Mask (2015)
- Hurricanes and Halos (2017)
- The Fire I Long For (2019)
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- "LEIF EDLING To Sit Out AVATARIUM's Performance At ROADBURN; TIAMAT's ANDERS IWERS To Fill In". 4 April 2014.
- "AVATARIUM - announce third studio album!". 21 February 2017.