Finnish guitarist who played with the gothic metal group Tiamat and the thrash metal band Grip Inc.
He joined, and remains to this day, with the experimental Finnish group Waltari.
After the guitar, the sitar is his favorite instrument; he has played it for both Tiamat and Grip Inc.
He grew up in Helsinki, Finland.
Slayer drummer Dave Lombardo was with Yli-Sirnio in Grip Inc.