What does "inversion" refer to in the context of chords?

In the context of chords, "inversion" specifically refers to reversing the order of notes within a chord. When a chord is inverted, one or more tones of the chord are shifted to different positions compared to the root position. For example, in a C major chord, which consists of the notes C, E, and G, the root position has C as the lowest note. If E becomes the lowest note, this is termed the first inversion, and if G is the lowest, it is the second inversion. Thus, inversions provide different voicings and can create smoother transitions between chords in a progression, enhancing the musical texture and harmony.

The other options do not accurately describe what inversion means in terms of chords. Mirroring the chord progression does not inherently change the order of notes within a singular chord. Changing the pitch of all notes does not relate to the order of the notes, but rather their individual frequencies. Finally, playing chords in a higher octave refers to the range rather than the arrangement of the notes themselves. Understanding the concept of inversion enriches your ability to analyze and create varied chord progressions in music.