Children of Bodom When Raatikainen met
Alexi Laiho at school in the year of 1993, they realised that they had similar ideas and musical taste. Thus, they began playing together and idealizing their band Inearthed which would one day become
Children of Bodom. The band released their first demo,
Ubiquitous Absence of Remission, which he contributed some keyboards. Jaska played a vital role in the formation of the band, since he was the one who brought both
Alexander Kuoppala and
Janne Wirman to their line-up. Jaska also provided backing vocals on the songs "Warheart", "Black Widow", and "Children of Bodom" from his band's album,
Hatebreeder. In 2019, Raatikainen, and bandmates
Henkka Seppälä and
Janne Wirman left Children of Bodom due to issues with band frontman
Alexi Laiho's alcohol abuse. At the time, the reasons for their departure from the band were not disclosed, and Children of Bodom soon broke up. Laiho died a year after the band's breakup. In October 2025, it was announced that Raatikainen would be rejoining Children of Bodom for two reunion shows, titled A Celebration of Music, to be held as a tribute to Laiho at the
Tavastia Club in Helsinki on 26–27 February 2026.
Other musical ventures He has also helped quite a few bands when they needed a competent drummer. During
Sinergy's 2000 European tour, he replaced
Tommi Lillman, who had injured his leg. The problem, however, was that this happened three days before the start of the tour, which meant that Raatikainen had to quickly learn how to play ten of Sinergy's songs. Despite the high degree of difficulty, he managed to perform very well, and fans of both bands enjoyed seeing both Raatikainen and Laiho on stage together with Sinergy. On the
Suicide by My Side album's booklet, the band wrote a dedicatory to Raatikainen for, on to their own words, "
saving [their] tour". Raatikainen has also played in Virtuocity and Evemaster albums, but since those are both studio bands, he does not have to worry greatly about Children of Bodom's tour schedule, which already has to be calculated ahead to some extent, due to Laiho's previously active participation in Sinergy. On the 2002 tribute to
Chuck Schuldiner – mastermind of one of the most notable
death metal bands of all time,
Death – Raatikainen, who is a fan of the band, played a couple of cover songs with
Norther. A year later, Raatikainen formed a side project with Norther's guitarist
Kristian Ranta entitled Gashouse Garden, which has not yet been signed to any recording label.
Acting Raatikainen has had some side projects, some of them unrelated to music. In the year of 2000 he was asked by the director of a popular Finnish soap opera (Siamin Tyttö) to play a special part on it. He played a character named Rauli for three episodes, until the character's death. He did have the chance to show some of his drumwork before that happened, though. According to Raatikainen, he had always dreamed of acting, but does not plan to take his career further. ==Musical style and influences==