In Season 2020/21 Marlen Bieber was a member of the newly founded Opera Studio of Die Theater Chemnitz. She joined the ensemble since 2021/22 and has appeared as Muse/Niklas in HOFFMANNS ERZÄHLUNGEN, Prinz Orlofsky in DIE FLEDERMAUS, Mercédès in CARMEN, Maddalena in RIGOLETTO and as Hansel in HANSEL AND GRETEL a.o. She also played Hansel in the DVD recording of Hänsel und Gretel which Die Theater Chemnitz released in December 2021. In 2022 Bieber debuted as Fox in THE CUNNING LITTLE VIXEN and had a guest appearance at Musiktheater im Revier in Gelsenkirchen. Marlen Bieber gained her first stage experience during her bachelor's degree in the university productions DAS SCHLAUE FÜCHSLEIN, where she was heard as Woodpecker and as Cherubino in LE NOZZE DI FIGARO. In 2018 she made her debut as the 2nd boy (MAGIC FLUTE) at the Dresden State Operetta. Another great passion of the mezzo-soprano is to sind at the concert platform. Under the batton of Hans-Christoph Rademann she has appeared as a soloist many times, including in Beethoven's Mass in C major and numerous Bach cantatas. 
Particular highlights of her concert career is a recital at the Semperoper Dresden in October 2019, where she performed songs by Fidelio F. Finke and her debut at the Dresden Music Festival with THE WHITE ROSE by David Chesky in 2023. In addition to Hans-Christoph Rademann, she has worked with conductors such as Eckehard Stier, Roland Böer, Guillermo García Calvo and Eric Jacobson. Marlen Bieber was awarded with the Eva Kleinitz Award at the Concorso Lirico Internazionale di Portofino 2024. She is a Finalist of the International Robert-Schumann-Competiton 2024 and prize-winner of the DEBUT Classical Singing Competition in 2022. She is a scholarship holder of the Festival of Young Voices and the Richard Wagner Association. She completed her high school diploma in music at the Clara-Wieck-Gymnasium and at the Robert-Schumann-Conservatory in Zwickau. From 2016 to 2021 she studied singing at the Hochschule für Musik in Dresden with Margret Trappe-Wiel and Lothar Odinius. She received further valuable impulses in the Song-class of Olaf Bär and in numerous master classes, among others with Brigitte Fassbaender, Hedwig Fassbender and Jukka Rasilainen. In private lessons she also works closely with the polish soprano Lucja Zarzycka.