Let’s start by looking at the C Major Chord (triad) on the treble clef and on the piano keyboard…
Now let’s take a look at what a C Augmented chord looks like on the treble staff and on the piano keyboard…
As you can see the 5th degree of the chord, in this case G has been raised a half step to G#
Now play these chords on your piano and keyboard so you hear the difference.
It goes from happy and cheerful to a bit of dissonant angst. It’s just another way to spice up your chord progressions and variations.
Your assignment until next time is to practice turning all the major triads in every key to an augmented chord.