Dwight was born in Moorhead, Iowa on May 16th, 1934 to Clarence and Mary Lamb. Descendants of Danish immigrants, the Lamb family cherished the traditions of self-made music and entertainment. Dwight's grandfather, Chris Jerup, played traditional Danish melodies on the single-row button accordion and the fiddle .His father played the fiddle and his mother chorded on the pump organ. His great-grandfather, Kraen Jerup, was a famous fiddler in Denmark and his tunes are still played in Denmark to this day. In 1946 Chris Jerup moved in with the Lambs and it was then that Dwight started to learn Danish tunes on his grandfather's accordion. He captured about 100 tunes from his grandfather and most of the tunes weren't named.

Dwight's Danish roots are important to him and he conveys his love of the music through the simple, yet lively and elegant tunes that his grandfather gave him. Today these tunes are being revived in Denmark through the teachings of Kristian Bugge and Mette Jensen. Dwight is also a master fiddler in the Missouri Valley style of fiddling and first learned many of these Midwest tunes on the accordion.