Half of My Heart (Karaoke Version) (Originally Performed By John Mayer feat. Taylor Swift) is and English album released in 2015. There is one song in Half of My Heart (Karaoke Version) (Originally Performed By John Mayer feat. Taylor Swift). The song was composed by Sing Strike Karaoke, a talented musician. Listen to all of Half of My Heart (Karaoke Version) (Originally Performed By John Mayer feat. Taylor Swift) online on JioSaavn.