The Swedish actress/singer Zarah Leander performs two songs in the film; "Schlummerlied" and "Romance in F minor, Op.5". Mrs. Leander used to visit the village Kvarsebo.
The small village Kvarsebo was converted to the new family name Qvarsebo for Edgar and Thyra Karlsson in the late 1920's. Swedish actor Ulf Qvarsebo was their son.