Half of My Heart

"Half of My Heart"
Song

Half of My Heart is a song by American alternative rock singer John Mayer and American country pop singer Taylor Swift. It is the third single from Mayer's 2009 album, Battle Studies.

Music and lyrics

"Half of My Heart" features more of a pop rock sound than Mayer's previous music. His previous albums explored blues and acoustic rock, especially in his 2006 album Continuum. It also has a carefree, sing-along sound to it.

The lyrics of the song are sung by both Mayer and Swift; Swift sings with Mayer in the chorus and in the song's bridge. The lyrics are about the duo, with half of their hearts saying they should continue to love each other, although the other half says they are not each other's true love, and cannot keep loving each other.

In an interview shown on television called John Mayer: On the Record with Fuse (which only aired on the Fuse channel), Mayer's interviewer asked why the singer chose Swift to duet with, since she was only nineteen years old, and Mayer was 32. He responded by saying that he was not putting her on the album just to sell more copies for die-hard fans of Taylor Swift that might just get the album for that song.

Chart performance

"Half of My Heart" debuted at twenty-nine on the Billboard Hot Adult Top 40 Tracks chart on the issue date of May 8, 2010. This makes John Mayer's fourteenth appearance on that chart.

Chart (2009–2010)	Peak position
Canadian Hot 100	53
U.S. Billboard Hot 100	25
U.S. Billboard Hot Adult Top 40 Tracks	29