[2] Mechelin trained in Paris in 1865–67 and 1869–70 under leading pedagogues of the time, including Pauline Viardot.

[3] She also performed at the Royal Dramatic Theatre in Stockholm,[1] as well as touring extensively in Finland and Scandinavia.

[1] Mechelin taught singing from early on, with her pupils including Emma Engdahl-Jägerskiöld,[4] Emmy Achté and Ida Basilier-Magelssen.

[1] In 1882, Mechelin was appointed the first teacher of voice at the Helsinki School of Music (Helsingin Musiikkiopisto),[5] which post she held until 1885, when she moved to Kristiania (now Oslo) and later to Stockholm to continue her teaching career.

[6] In the latter part of her career, Mechelin gave up singing almost entirely, dedicating herself instead to giving private lessons.