Listen to Gravity (Is Working Tiktok) [Originally Performed by John Mayer] online. Gravity (Is Working Tiktok) [Originally Performed by John Mayer] is an English language song and is sung by Kelsey Hammer. Gravity (Is Working Tiktok) [Originally Performed by John Mayer], from the album Tiktok Edition, Vol. 2, was released in the year 2019. The duration of the song is 4:09. Download English songs online from JioSaavn.