Chord progression in the key of Db.
The chords are: Gbmaj (IV), Gbmaj (IV), Abmaj (V), Dbmaj (I)
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
"JazzGuitar1Walk" groove at 105 beats per minute.