Viljo "Vili" Vesterinen (born 26 March 1907 in Terijoki, died 18 May 1961 in Helsinki) was a Finnish accordionist and composer. Vesterinen studied piano and cello in Vyborg Music Institute, but as an accordionist he was self-taught. Vesterinen mainly played in different bands and theatres early in his career. Vesterinen made his first recordings in 1929. The most popular recording of Vesterinen is Säkkijärven polkka in 1939.

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