Listen to the sound clip All aboard. from Gravity Falls - Season 2: All aboard. All aboard. This sound is from Gravity Falls - Season 2 Gravity Falls is an animated television show created by Alex Hirsch. Season 2 of the show aired from August 1, 2014, to February 15, 2016. This critically acclaimed series takes viewers on a thrilling and mysterious adventure in the ficti… Go to the full soundboardwith more sound clips Search