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Developer to Researcher: The Capo Features I Didn't Know Were Important

After 13 years of building ear learning software, I thought I understood how musicians learn from recordings. [...] But when I tried to justify why these [new] features would actually help musicians, my foundation started to reveal its cracks.

Capo 4.5

I'm rather pleased to say that another Capo 4.5 update is available only three weeks after I shipped 4.4.


Capo 4.4

Capo 4.4 is now available for Macs with macOS 14 and later, and iPhones and iPads with iOS 17 and later.


A Bug Hunting Story: How Album Artwork Caused a System-Wide Loss of Audio

Capo was not playing audio for some users on Intel Macs running Sonoma. After spending almost two weeks (and about $850) I discovered that macOS Sonoma had a rather nasty bug that was triggered by loading JPEG images.


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