“Don Henley knew to listen when Mike Campbell came calling with a piece of music,” (American Songwriter). “The first time it happened, Campbell provided Henley with the foundation for his biggest solo hit, 1984’s ‘The Boys Of Summer.’ When Campbell delivered another unused instrumental piece as Henley was making 1989’s The End Of The Innocence, the end result was ‘The Heart Of The Matter,’ which became the album’s closing track and turned into one of the most resonant ballads of the decade. Indeed, the first lines of ‘The Heart Of The Matter’ tell the news of the narrator’s former flame finding someone new, putting him in a wistful, reminiscing mood: ‘And I thought of all the bad luck and the struggles we went through/How I lost me and you lost you.’
Henley muses about the tendency for even those who are seemingly at peace in a relationship to seek greener pastures: ‘What are these voices outside love’s open door/Make us throw off our contentment and beg for something more?’ ‘The Heart Of The Matter’ strikes such a chord because the themes are universal, especially for those who have lived, and lost, a little. Many breakup songs get bogged down in rancor and recrimination, but here is one that strives for something nobler, even as it admits how hard it is to get there.”
Built in D major overall, the track shifts to C major for most of its brief bridge (3:32 – 3:49) before shifting back into D major via its Vsus/V chord (3:49-3:54). Then we drop back into another verse in the original key.