The Oslo Conservatory of Music (Norwegian: Musikkonservatoriet i Oslo) was a music school in Oslo, Norway. The school was established by Ludvig Mathias Lindeman and his son Peter Brynie Lindeman in 1883 in Christiania (as Oslo was then called) and was named the Organist School (Norwegian: Organistskolen). In 1885 it had 174 students and was renamed the Music and Organist School. Peter Brynie Lindeman took over leadership of the school after his father's death in 1887. The school was renamed again in 1892 to the Christiania Music Conservatory, and it was the only institution of its kind in Norway until 1905. Peter's son Trygve Lindeman (1896–1979), who studied music in Stockholm, became a teacher at the school in 1921 and became its head in 1930. Trygve Lindeman retired in the 1960s and man