Chord progression in the key of Ab.
The chords are: Abmin (i), Ebmaj (V), Gdim (viiº), Gdim (viiº)
The video is a still image of a music staff with the chord notes
and guitar chord diagrams.
The audio was generated using the MMA: Musical MIDI Accompaniment
"BroadwaySus" groove at 95 beats per minute.