Otto Emanuel Olsson (1879–1964) was a Swedish composer and organist, primarily recognized for his contributions to choral and organ music. His works often reflect a blend of traditional Swedish folk elements and classical music, showcasing his deep understanding of harmony and melody. Among his notable compositions are "Midsommardansen" and "Vesper," which highlight his ability to integrate lyrical beauty with intricate choral arrangements. Olsson was also a prolific writer of organ music, with pieces that remain popular in both liturgical and concert settings. His impact on music is significant in the context of Swedish liturgical music, as he helped to elevate the standard of choral and organ music during the early 20th century. Olsson's work is characterized by its lyrical quality and emotional depth, influencing subsequent generations of Swedish composers. He served as a professor of music at the Royal College of Music in Stockholm, further solidifying his legacy through education. His contributions continue to be celebrated in Sweden and beyond, particularly within church music and choral circles.