Her vast repertoire includes operas, oratorios, church cantatas, contemporary pieces, lieder and many solo baroque chamber cantatas, some of which she performs with baroque gesture. She is a core member of the Brussels baroque ensemble Les Abbagliati and of the contemporary music ensemble Neues Atelier (Austria). As a guest she collaborates with several ensembles, notably with Belgian early music ensemble RedHerring with whom she recorded the album "La Muse et la Mise (en Concert)" (2016).
Since her debut at the Theater Aachen as Le feu, La princesse and Le rossignol in "L'Enfant et les sortilèges" in 2012, she was asked again to sing in the world creation of "sweetieorpheus_27" by Ole Hübner in 2013 and joined the ensemble as a young singer in 2013/14, performing the parts of first wood-sprite in "Rusalka", Tebaldo in "Don Carlo" and Fiametta in "Die Banditen" by Offenbach. Following roles in Aachen included Jano in "Jenůfa" and Dorinda in Händels "Orlando". During the season 2016/17 Soetkin is again re-invited to Aachen to sing the parts of Hodel in "Fiddler on the Roof" and Amour in the Paris version of Gluck's "Orphée et Eurydice".
In 2014 Soetkin was heard at the Stephansdom in Vienna with Bach Consort Wien under Rubén Dubrovsky, a concert that was broadcast by Austrian tv-channel ORF2 and in August of that year she sang the soprano parts in "Pigmalion" and "Anacréon" by Rameau with L’Orfeo Barockorchester (dir.: Michi Gaigg) at the donauFESTWOCHEN im strudengau (Austria).
During the Wiener Festwochen 2010 she debuted in Musikverein under Marino Formenti, performing "Credentials" by Roman Haubenstock-Ramati (broadcast by Austrian radio ORF). Later that year she received positive reviews (Opernwelt, FAZ) for singing the part of Diana in "L'Oracolo del Fato" by Gasparini in Schloss Damtschach (Austria). She was re-invited to Schloss Damtschach in 2012 to sing the parts of Euridice and Amore in "Orfeo ed Euridice" by Fux.
Since 2014 Soetkin Elbers hosts her own monthly radio show about music from Belgium, called "Brüssel Zentral" on German internet radio station ByteFM.