"Opphav" comas as a part of the "Kunstmusikken & Folkesjela" project, where violinist Sander Tingstad intergrates Norwegian classical music with folk music performed together with award-winning pianist Ingfrid Breie Nyhus and Norway's leading folk musician, accordionist Mad Erik Odde.

Nyhus has created international recognition with his recordings of "slattemusikk" on piano, and is known for his spontaneous and peculiar expression. Together, Tingstad and Nyhus create a unique version of Grieg's Sonata in G major.

"I experience that classical music often is interpreted the same. The Norwegian folk music is interpreted in the same way, through the music from the same period. I think that this particular music has something special, and that grabbing elements from folk music opens for new and , where one could find ways to the very same inspiration the great composers used. The lonely and melancholy. Familiarity. The real and honest. The subtle." - Sander Tingstad

Sparre Olsen's "Six old townsongs from Lom is known and loved by Norwegian violists, however not many know of the traditional foundation for this composition. Jarnfrid Kjor from Lom is credited as a part of the ever-breathing oral tradition, and sung and told the stories to Tingstad. The unique musical tradition experienced in the songs, considering rhythmic, sound and intonation, comes to life in an arrangement for violin and accordion played by Mads Erik Odde