She first appeared at the Royal Opera House as Isotta in Die schweigsame Frau in 1961, and bowed at the Metropolitan Opera in 1972 as Donna Elvira.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: She first appeared at the Royal Opera House as Isotta in Die schweigsame Frau in 1961, and bowed at the Metropolitan Opera in 1972 as Donna Elvira. ### Response: .