At that opera house she has performed in roles such as: Erda in the Der Ring des Nibelungen, Fenena in Nabucco, Suzuki in Madama Butterfly, Adelaide in Arabella, and Mistress Quickly in Falstaff.
She performed Mahler's Kindertotenlieder at the Septembre Musical in Montreux, Switzerland in 2004 and on the request of Zubin Mehta, she sang Erda and Schwertleite at the Palau de les Arts Reina Sofía in Valencia.
She also performed Maddalena in Verdi's Rigoletto in Dresden in 2008, along with Diana Damrau and Juan Diego Florez.
Mayer's future roles will be Ottavia in L'incoronazione di Poppea and Gaea in Daphne.
[4] She will be singing as a guest at the InterHarmony International Music Festival in Sulzbach-Rosenberg, Bavaria with Cellist Misha Quint in 2010.