Viggo Sommer Kristensen, born on January 28, 1957, in Viby at Aarhus, Denmark, is a Danish vocalist, musician, and comedian. Sommer began his career as part of the comedy trio De Nattergale, which gained significant popularity with their TV show The Julekalender in 1991. The group released several albums, including Hva' har vi da gjort ... siden vi ska' ha'et så godt (1987) and Songs From The Julekalender (1991). Sommer's solo career includes the album Så sku' den ged vist være barberet, released in 2002. In addition to his music, Viggo Sommer Kristensen appeared in various films and television shows, such as Walter og Carlo i Amerika (1989) and Ludvig & Julemanden (2011). He also contributed vocals to the Christmas album "Sving Dine Dadler" by Skullclub in 2015.