HomeHacker News Show HN: A piano chord-switch practicing tool I made https://ift.tt/3z21lfN byDZVOX -12/26/2021 01:39:00 AM 0 Show HN: A piano chord-switch practicing tool I made https://ift.tt/32B6jnv December 26, 2021 at 12:41AM Tags: Hacker News Facebook Twitter