Herra Heinämäen Lato-orkesteri

Heikki Johannes Silvennoinen (born 27 April 1954) is a Finnish musician and an actor. He was a guitarist and a songwriter in several notable Finnish bands in the 1970s and 1980s, and has also recorded solo albums. He is best known in Finland as a member of comedy group Kummeli, which started a television show in 1991. Silvennoinen owns a production company named Pirkka-Hämeen Apina & Gorilla Oy ("Ape and gorilla of Pirkka-Häme Inc."). With his fellow comedian Timo Kahilainen he owns Porkkana Ryhmä Oy ("Carrot Group Inc."), which produces Kummeli's output.