Historical clue formulations

• Modern music staple that's a punny description of 17-, 24-, 38- and 48-Across — 2022-10-12
• Correction for a wild pitch — 2021-05-08
• Get perfectly pitched, in a way — 2016-09-23
• Pitch-correcting audio processor — 2016-01-20
• Musical tool on Time's list of "50 Worst Inventions" — 2015-07-31