Chord progression in the key of Db.
The chords are: Gbmaj (IV), Abdom7 (V), Gbdom7 (IV), Abmaj (V)
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
"JazzGuitar2" groove at 110 beats per minute.