31 December 1975|
Sirén had his first drumming lessions when he was six years old. Since 2003 he is part of the live shows for Apocalyptica and since 2005 he is a full member of the band. Together with Perttu Kivilaakso he composed the soundtrack for the game "Max Payne 2: The Fall of Max Payne".
He has a degree in Jazz music. He also writes a blog to raise awareness for our climate: Ilmasto on hot
Since 2013 he is officially a member of Emigrate.