"Heartbeat" is a song recorded by American singer and songwriter Carrie Underwood from her fifth studio album, Storyteller. It was written by Underwood, Ashley Gorley and the song's producer, Zach Crowell. Country singer Sam Hunt sings backing vocals on the track. The song was released to the radio by Arista Nashville on November 30, 2015 as the album's second single, after "Smoke Break". Musically, "Heartbeat" is a country pop and a R&B song with lyrics that relate to the feeling of intimacy experienced by being alone with one's lover. It appears to be inspired by Underwood's marriage to Mike Fisher.