She was a central figure in the Finnish leftist music scene of the 1960s and 1970s, appearing both as a solo artist, and with KOM-teatteri.
In 1972, Korhonen moved on to become a teacher of directing at the Suomen Teatterikoulu (now the Helsinki Theatre Academy). Here she stayed until 1977.
After her singing career, Korhonen became an accomplished director and teacher of theatre directing.
In 1965, Korhonen was named leader of the Helsinki Ylioppilasteatteri.
Korhonen studied scenography at the Taideteollinen oppilaitos (now Aalto University School of Arts, Design and Architecture) between 1961 and 1965.