this thing in the intro appears for a second and then disappears right after and my friend caught him : r/gravityfalls
Gravity Falls Opening Theme Cover Rock
Big Tree?, Gravity Falls
Gravity Falls Bill Cipher Theme Song Sheet Music Composed - Shovel Knight The Apparition Piano Sheet, HD Png Download - 850x1100(#1767784) - PngFind
Gravity Falls Title Theme, Disney Wiki
Gravity Falls Flute Sheet Music
Gravity Falls Opening Theme for Ocarina by Koriri on DeviantArt
Gravity Falls Main Title Theme, Gravity Falls Wiki
Gravity Falls Theme Song High Pitches [HD]