tune

A melody.

Eric played a catchy tune on his acoustic guitar and Alyssa played the drums.

A song, or short musical composition.

The act of tuning or maintenance.

Your engine needs a good tune.

The state or condition of being correctly tuned.

Your engine is now in tune.

This piano is not in tune.

Temper; frame of mind.

Used to show appreciation or approval of a song.

You heard the new Rizzle Kicks song? — Tune!

To adjust (a musical instrument) so that it produces the correct pitches.

to tune a piano or a violin

The Harpe. […] A harper with his wreſt maye tune the harpe wrong / Mys tunying of an Inſtrument ſhal hurt a true ſonge

To adjust or modify (especially a mechanical or electrical device) so that it functions optimally.

Tuning the engine gave me an extra twenty horsepower.

Tune your mind, and anything becomes possible.

To adjust the frequency on a radio or TV set, so as to receive the desired channel.

Tune to Channel 6 for all your favourite daytime shows.

Of faculties, senses, etc.: to adapt to or direct towards a particular target.

My ears were tuned to the sounds of the forest.

To make more precise, intense, or effective; to put into a proper state or disposition.

[H]ee hath incurred the euerlaſting diſpleaſure of the King, who had euen tun'd his bounty to ſing happineſſe to him.