in major

I7 – I7 – I7 – I7 – IV7 – IV7 – I7 – I7 – V7 – IV7 – I7 – V7: D♭7 → D♭7 → D♭7 → D♭7 → F#7 → F#7 → D♭7 → D♭7 → A♭7 → F#7 → D♭7 → A♭7