Half of My Heart
Song by John Mayer
"Half of My Heart" is a song by American singer-songwriter John Mayer featuring American singer-songwriter Taylor Swift. It is the third single from Mayer's 2009 album, Battle Studies. Mayer was nominated for a Grammy Award for Best Male Pop Vocal... Wikipedia
Recorded: 2009
Label: Columbia; Big Machine
Length: 4:10 (album version); 3:52 (pop mix)
Released: June 21, 2010
Songwriter(s): John Mayer