Lars Hannibal has captured in words the spirit behind this compilation of pieces arranged for the two instruments: 

The music all has a touch of Latin, and the name “Siesta” is meant as a little “Time out” during the day where you decide to do something else than work! - it could be listening to some music! 

As in the cover picture, the door and windows are closed - in other words the people are taking their “Siesta” - but not asleep, far from it. Ideally, doors and windows should be closed whenever one listens to music, but the world strays further and further away from that ideal, as from so many others.