Most musicians can tell you the difference between ‘major…

https://www.musical-u.com/learn/learn-to-recognise-chords-free-mp3-pack/
Most musicians can tell you the difference between ‘major’ and ‘minor’ chords.

But ‘augmented’? ‘Diminished’? Different inversions, and chord progressions…?

Then it gets trickier!

This free downloadable training pack will introduce you to recognising chords by ear, starting with the four most important types of chord:

Major, Minor, Augmented and Diminished triads