Listen to Heartbreak Warfare (Karaoke Universe)[In The Style Of John Mayer] online. Heartbreak Warfare (Karaoke Universe)[In The Style Of John Mayer] is an English language song and is sung by Karaoke Universe. Heartbreak Warfare (Karaoke Universe)[In The Style Of John Mayer], from the album The Best Karaoke 2016, was released in the year 2016. The duration of the song is 3:54. Download English songs online from JioSaavn.