Here are links to the videos I created for my Spring 2014 Theory II class (and the secondary dominant unit of the previous fall).

Six-Four Chords

• Video 1: Intro
• Video 2: Neighbor
• Video 3: Passing
• Video 4: Cadential

Dominant Seventh Chords

• Video 1: Root Position
• Video 2: Writing RP
• Video 3: Inversions
• Video 4: Analysis

Leading-Tone Triad

• Video: vii°⁶

Cadences

• Video 1: Cadences Information
• Video 2: Part Writing Cadences

Other Diatonic Triads

• Video 1: vi(VI)
• Video 2: iii(III) and VII
• Video 3: Part Writing Other Triads

Other Seventh Chords

• Video: Other Seventh Chords

Harmonic Sequences

• Video 1: About Harmonic Sequences
• Video 2: Part Write Three Sequences

Secondary Dominants

• Video 1: New Terms 
• Video 2: Finding Secondary Dominants
• Video 3: Composing Secondary Dominants

And a Youtube Playlist