Alongside Simone Sommerland and children's choir Die Kita-Frösche, male singer Karsten Glück is the voice behind the successful Die 30 Besten collections, a series of German educational songs designed for young children. He's appeared on all six releases since their inception in 2010, including Lernlieder Zum Mitsinger, Weihnachts-und Winterlieder, and Spiel-und Bewegungslieder. ~ Jon O'Brien