I need to retune the piano before tonight's concert.

After hours of adjustments, he retuned the old violin until it sounded like new.

Every Sunday she retunes the old piano in the parlor.

The retuners in the workshop carefully adjusted each radio to improve reception.

The retuner adjusted the piano strings until every note sounded perfect.

She found retuning the piano after each weather change became part of her morning routine.

The retuning of the old piano took longer than we expected.

The retunable piano allowed the conservatory to adjust its pitch for different ensembles.

The synthesizer required multiple retunings before the band was satisfied with the live sound.