Happy One Step is a historically significant Cajun fiddle tune originally recorded by Dennis McGee and Sady Courville in March 1929 in New Orleans for Vocalion Records. Their recording represents one of the earliest examples of Cajun music, captured during an era before the accordion became prominent in the genre. The tune has gained renewed popularity among modern Cajun musicians and remains a staple in the traditional repertoire, bridging nearly a century of Louisiana French musical tradition.