[3] Born in Siegburg, Bahrmann began her studies in 2001 at the Hochschule für Musik Saar in the voice class of Rosemarie Bühler-Frey.
In summer 2006 she sang Juliette in Franz Lehár's operetta The Count of Luxembourg (DVD) at the Seefestspiele Mörbisch.
In 2007, she sang Barbarina in the marriage of Figaro at the Theater an der Wien and in 2009 Flaminia in Haydn's Il mondo della luna, conducted by Nikolaus Harnoncourt.
Her roles from opera and operetta include: the title role in Cavalli's La Calisto, Konstanze and Blondchen in The Abduction from the Seraglio, Susanna in The Marriage of Figaro, Pamina in the magic flute, Adele in Die Fledermaus, Musette in La Bohème, Norina in Don Pasquale, Sophie in Der Rosenkavalier, Laura in Der Bettelstudent, Oskar in Un ballo in maschera, Zerbinetta in Ariadne auf Naxos, Rosina in The Barber of Seville, Gretel in Engelbert Humperdinck's fairy tale opera Hänsel und Gretel and the prima donna Corilla in Donizetti's Viva la Mamma (staged by Rolando Villazón).
[7] As Liu in Turandot she debuted alongside Neil Shicoff as Kalaf at the Vienna Volksoper in 2014 and has also appeared there as Violetta in La traviata.