Carl Jularbo, well known as Calle Jularbo and born as Karl Karlsson (6 June 1893, Jularbo, Avesta Municipality, Dalarna County, Sweden - 13 February 1966, Nacka Municipality, Stockholm County, Sweden) was the most famous Swedish accordionist of his time. He had a very distinct personal style, that has played a significant part in forming the Swedish accordion tradition. He was extremely productive, recording 1577 tunes and he won 158 accordion competitions. He maintained a large repertoire without being able to read music. His best known tune is Livet i Finnskogarna (roughly "Life in the Finn forests"), recorded in 1915. This song was the basis for the Les Paul and Mary Ford hit of 1951, "Mockin' Bird Hill".