Heres a Synthesia tutorial for my piano arrangements of Gravity Falls! Included are both versions of the opening theme: The regular one used in most .br It is tutorial how to play Gravity Falls Weirdmageddon Theme on piano.br I already made a piano cover of the theme song from Gravity Falls, but Ive been getting a lot of requests for the Weirdmageddon version! Weirdmageddon is .br Gravity Falls is produced by Disney Television Animation, created by Alex Hirsch (alias Bill Cipher) Main Theme by Brad Breeck (2012, this rendition 2015) .