Eugen Malmstén was a Finnish musician, singer, conductor, lyricist, and composer. He began playing trumpet at 15 in the navy band, where his brother Georg Malmstén had also played, and studied voice and trumpet at the Helsinki Music Institute. In 1927, he co-founded the Flapper's Dance Band with Al Manuel and later joined Fred Freddy's Rhythmic Orchestra. Malmstén made his first recording under the pseudonym Esa Nummenkivi in 1931 but soon recorded under his own name. He also led the radio orchestra Rytmi-Pojat and the Rio Orchestra, recording hits such as "Hei hulinaa, Helsinki," "Ruusut hopeamaljassa," and "Tuo suru jonka sain." Post-war, he collaborated with accordionist Lasse Pihlajamaa and toured with Viljo Vesterinen, and in 1962 toured Canada and the United States with Esa Pakarinen. Malmstén died on September 1, 1993, at age 86 in Helsinki.