A new open-air spectacle under the stars brings Schlager queen Andrea Berg home to Aspach, where 35,000 fans transform her village into a music metropolis. Host Florian Silbereisen goes behind the scenes, at rehearsals, in wardrobe, and at Berg’s family home, to capture her pre-show jitters, wardrobe changes, and rituals (“Uncle Piti” on hand, her lucky charm, and mother by her side). On “Sternennacht,” Andrea and guests like DJ Ötzi and Xavier Naidoo perform her biggest hits in an intimate cele...