2012). In support of the new album, Wintersun embarked on their first tour of North America, supporting Eluveitie along with Varg, starting in late November. Mixing for Time II began in early 2013. The band stated the album "will continue where 'Time I' left [off]" and include seven guitar solos. The album was expected to be released in early 2014. In August 2013, Wintersun embarked on a second North American tour. Support was provided by fellow Nuclear Blast artists Fleshgod Apocalypse, Arsis, and Starkill, with Wintersun headlining. On 29 January 2015, Wintersun announced via their official Facebook page that Kai Hahto would be unable to perform in upcoming live shows, due to his obligations to Nightwish. Timo Häkkinen was named as his temporary replacement for live performances. In November 2016, Wintersun announced that they were looking for a second guitarist for the band so Mäenpää could focus solely on vocals during live performances. 2017–present: The Forest Seasons and lineup changes On 4 January 2017, the band announced on their Facebook page that the recording for their third studio album was completed and that it would be released later that same year. The album is not going to be "Time II", but rather a new project. On 11 January 2017 the band announced the name of their third studio album, The Forest Seasons. On 1 March the band started a crowdsourcing campaign on the Indiegogo platform, the first of three projected campaigns, aiming to raise funds for their own studio. The first campaign was successful, surpassing the minimum objective of 150,000 euro in a single day, and raising 464,330 euro in total. On 17 August 2017, the band posted their future tour dates and notified fans that drummer, Kai Hahto, is still recovering from hand injuries and cannot tour. Hahto will be continuing his tour with Nightwish. Wintersun announced its new session drummer will be Rolf Pilve of Stratovarius. On 15 July 2019, Hahto was announced as Nightwish's permanent drummer following Jukka Nevalainen's decision not to return to the band. On 28 May 2021, Jukka Koskinen was revealed as Nightwish's session bass player for their world tour in 2021 and 2022. Koskinen was announced to have joined Nightwish as a full-time member on 21 August 2022. On 4 May 2022, it was announced session guitarist Asim Searah had departed the band. Musical style Wintersun is known for creative harmonies, fast tempos