Today I woke up and NVDA was no longer reading anything on iTunes. After investigating I figured that iTunes was updated to version 12.9.0.167 from the Microsoft Store overnight, so suspecting it might be an issue with iTunes I tried Narrator which worked just fine.

I'm running Microsoft Windows 10 Home version 10.0.17134 Build 17134 with NVDA 2018.2.1, and after analyzing the log I found that there were exceptions every time I tried to interact with iTunes.