The choir was established in 1946. It is considered one of the country's best church choirs

The choir's repertoire primarily consists of church music from the last 500 years, as well as premieres of works by local and national composers.

Nidaros domkor emphasizes maintaining the highest musical level both in innovative performances, productions of major works and participation in Nidaros Cathedral's liturgical life. The choir regularly collaborates with internationally renowned soloists, conductors and musicians.

The Nidaros cathedral choir represents Trondheim and Nidaros cathedral regionally as well as nationally and internationally.

With their around 80 singers, they fill the cathedral with powerful monumental works in church music.

Some of the leading soloists and musicians in Norway are engaged for their productions, and several of the most renowned conductors in Europe have worked with the choir. Nidarosdomens oratoriekor also regularly represents Trondheim and Nidaros Cathedral abroad.

The choir has established itself as one of Norway's leading girls' choirs, known for exquisite musicianship and innovative programming. The choir is characterized by high artistic quality, great musical variety and has premiered a number of works.

The choir regularly performs with professional artists and musicians, and works closely with Trondheim Symfoniorkester and Trondheimsolistene. The choir has also collaborated with internationally recognized conductors such as Andrew Parrott, Bob Chilcott, Stephen Layton, Edward Higginbottom, Grete Pedersen and Anton Armstrong.

Nidarosdomens Guttekor is Norway's oldest boys' choir. The choir continues a 1000 year old tradition of boys' choirs in the majestic Nidaros Cathedral in Trondheim. Here, the choir regularly participates in church services.

In addition to being a popular liturgical choir, Nidarosdomens Guttekor has become one of Europe's leading boys' choirs. The choir's repertoire ranges widely, from Gregorian chant in church services to major works for choir, symphony orchestra and world-renowned soloists.

Every year they hold a number of concerts at home and abroad. Since 1927, the choir have toured the world and is a regular guest in famous churches and concert halls in Europe, the USA and Asia.

Schola Sanctae Sunnivae is an independent vocal ensemble consisting of 12-14 female, trained singers. The ensemble presents Gregorian chant in a tradition that originated in Solesmes in France.​

Schola Sanctae Sunnivae was founded in 1992. The choir has collaborated with a number of well-known artists. They have and have toured in, among other places, Belgium, Estonia, France, Hungary, Spain and Denmark. In the spring of 2009, Scola Sanctae Sunnivae received the status of a pilgrim choir.

The choir has chosen its name after the female Norwegian saint, Saint Sunniva. She is said to have been a king's daughter from Ireland, known for her beauty and wealth.

Trondheim Vokalensemble is a professional choir that was established in 2015. The ensemble is associated with Nidaros Cathedral and the Trondheim Symphony Orchestra & Opera.

The ensemble singers' job is linked to TSO's opera venture.The ensemble contributes at Mass on Sunday and events of a national nature. The choir also has concerts under its own auspices.

The ensemble currently has seven permanently employed singers, but the ensemble can be expanded to both 12 and 16 singers if necessary. It recruits among the best both locally and nationally.