With the Kamerkoor Bel Canto conducted by Bouko Tiggelaar, Janina recorded the Christmas Oratorio of Heinrich Fidelis Müller on CD. For several years Janina was a permanent soloist of the chamber choir concerts and sang concert pieces by W.A. Mozart, Franz Schubert and C.V. Stanford in the Vennekerk and Marktpleinkerk in Winschoten.
As a professional choral singer Janina also sang with the Vocaal Ensemble Cantatrix the St. Matthew Passion by J. S. Bach and Messiah by G. F. Handel in larger churches in Amsterdam, The Hague, Utrecht, Leeuwarden, Groningen and Delft. In 2019 she sang Bachs “Matthew Passion” in Eindhoven, Maastricht and Venlo with “studium chorale”, conducted by Jos van Veldhoven.