Kai Gullmar was a Swedish composer, musician, singer and actress. After studying in London from 1924 to 1925, she returned to Sweden and made her debut as a performer in a revue by Ernst Rolf in 1929. Due to parental disapproval of performing on stage, Gullmar began working as a recording artist and composer for His Master's Voice. She became one of Sweden’s leading composers of schlager music, with notable entertainers such as Ulla Billquist and Karl Gerhard recording her compositions. Throughout her career, Gullmar wrote music for over 47 Swedish films. Notable songs composed by Gullmar include "En Natt På Ancora Bar" and "Blonda Joh." She passed away on March 25, 1982.