調律

1. Origins, structure, and basic meaning

• Structure: Written 調律 and read ちょうりつ, it is the adjustment of an instrument so its pitches and intervals are properly aligned.
• Basic usage: It describes specialist work on a piano before a concert and the time needed for an old instrument.

2. Common pitfalls and similar expressions

• Tuning rather than practice
  • It corrects the instrument itself, not the performer's ability to play a piece.