Heavy Christmas is a producer and founded by guitarist Erkka Korhonen in 2004 music project, which presents Christmas carols heavily adapted version. Soloists project has a well-known Finnish metal and rock singers, such as Marco Hietala, Tony Kakko, JP Leppäluoto and Jarkko Ahola.
2004 – Raskasta Joulua (as Raskas Joulu) (00:48:02)
2006 – Raskaampaa Joulua (as Raskas Joulu) (00:58:39)
2013 – Raskasta Joulua (01:05:58)
2014 – Ragnarok Juletide (00:57:20)
2014 – Raskasta joulua 2 (01:06:28)