The Rasmus is a Finnish rock band that formed in 1994 in Helsinki while the band members were in upper comprehensive school. The original band members were Lauri Ylönen, Eero Heinonen (bass), Pauli Rantasalmi (guitar) and Jarno Lahti (drums). Jarno Lahti left the year after and was replaced by Janne Heiskanen in 1995. Heiskanen quit the band in 1999 and was soon replaced by Aki Hakala.