No, unless there might be a private event
The metropolitan opera house & the metropolitan museum of art (both often referred to as "the met) are two distinctly different places. However, mmoa does occasionally have concerts. Check the events schedules.
You're thinking of the Metropolitan Opera House, also in NYC and also called the Met. (Confusing, I know.) There is music at the MET museum, but it's only in the instrument collection -- short pieces you hear in the audio tour. No vocals.
The MET is a museum
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