is regarded as one of the most prolific Non-Argentinian tango composers of the 20th century. Kärki was from Finland, and worked as a songwriter, composer, arranger, pianist, producer and publicist. Kärki also composed in the Jenkka (pronounced [yeng-ka]) tradition, which is a Finnish folk dance. However, his original passion was jazz, particularly the music of Duke Ellington, Count Basie and Louis Armstrong. It was this music that inspired him to participate in many songwriting competitions, and in 1939 he received the first prize from Rhythm Magazine in London.