During rehearsal, the choir director fixed several mistunings before the concert.

Mistuning the piano, the technician hurried to adjust the strings before the concert resumed.

The technician mistuned the violin during setup, and the performer struggled to find the right pitch.

During the rehearsal, the conductor paused the piece to correct a noticeable mistuning in the cello section.

The quartet abandoned the rehearsal early because the piano’s mistuned strings made harmonizing impossible.

Whenever he tries to hum along, he mistunes the melody and everyone laughs.

A mistune in the piano's middle register made the recital sound dissonant.

Don't mistune the piano before the concert; the slightest error will ruin the performance.