The Organ of Our Lady of Sorrows is one of the most outstanding instruments of the Romantic type and era in Latvia and also in the world.
The organ was built by Emīls Martins, a well-known organ builder in Latvia and the son of the older organ builder Augusts Martins.
The instrument was completed in 1897, a time when Romanticism, its traditions, and principles were predominantly prevailing throughout Europe.
The organ has only 16 registers, but its overall sound creates a thick, wide, deep, and colorful tone.
Emīls Martins often ordered pipes from the company A. Laukhuff. These were mostly metal pipes, as the builder usually crafted wooden pipes himself. However, this instrument is unique in that all the pipes—both metal and wooden—were crafted by the organ builder himself. This conclusion was made by Latvian organ builder and restorer Jānis Kalniņš, who studied the pipes made by Martins.