First Inversion: First inversion occurs when you take a triad or seventh chord and move its lowest note up an octave. This creates an inversion where the third of the chord becomes its bass note.
Second Inversion: Second inversion happens when you take a triad or seventh chord and move both its lowest and middle notes up an octave. This results in the fifth of the chord becoming its bass note.
Triad Chord: A triad chord consists of three notes stacked in thirds, typically including a root, third, and fifth. It forms the basis for many harmonies in music theory.