American Horror Story [1]'s sixth season is almost upon us, and we couldn't be more excited to finally find out the mysterious theme. The show creators have shared teaser after teaser [2] (26 to be exact), a handful of which feature a hauntingly beautiful song that we haven't been able to get out of our heads. The melodic humming comes courtesy of Colombian-American singer Kali Uchis [3], whose song "Sycamore Tree" has served as the background music for the "False Eyelashes," "Milli Crossing," "Lullaby," "Bite-Size," "Wind Chime," and "Anthology" teasers. Check out the full song below now — it sounds pretty different without all the freaky visuals.