Real name: Harry Lennart Yrjö Bergström

Finnish pianist, composer and conductor, born April 4, 1910 in Tampere, Finland: died on November 12, 1989 in Helsinki, Finland. He founded, and played in several popular Finnish bands and orchestras including Metro-Tytöt and Kipparikvartetti. He also composed music for numerous Finnish films.

He used several pseudonyms: Gerald Beach, Harold G. Burgess, Leonard Fleuvemont, Sointu Karikas, Lenny, Jorge Monterio, Walther Coli and Tintti-Kalle.

The composer Matti Bergström is his son, and his brother Rainer Bergström is a violinist.