Pythagoras already wanted to make planets sound. Even if, unfortunately, he didn't quite succeed: the music-loving alien, who has already visited the Theater und Orchester Heidelberg on Earth twice, now wants to get to know the music of other planets. Even if the actual journey to other planets is not quite so easy - travelling musically to distant galaxies is no problem at all. And what could be better suited for this mission than a piece by Gustav Holst that already has the planets in its title?