a fermata tells the performer to

A fermata in music notation indicates that the performer should hold a note or a rest for a longer duration than its usual value. It is written as a symbol that looks like an upside-down bird's eye.

To interpret a fermata, the performer should pause momentarily on the note or rest indicated by the fermata. The exact duration of the hold is generally left to the discretion of the performer or conductor, allowing for an expressive interpretation of the music.

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