I've been wondering if the writers selected the name Dreilide for Kara's father not only because it has some resonance with the name Daniel, but also because the name is an anagram. Leaving alone the name Thrace, Dreilide looks like the letters often found in German words. I then started playing around with the letters in Dreilide. I came up with die lieder, which means the songs. Sometimes lieder are grouped to comprise a song cycle, a liederkreis.